~~Delaware~~UNITED ~~333-112203~~STATES 33SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-~~0885129~~K Current Report Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 27, 2004 (Date of earliest event reported) Ameriquest Mortgage Securities Inc (as Depositor under the Pooling and Servicing Agreement, dated as May 1, 2004, providing for the issuance of Asset-~~-------~~Backed Pass-~~---------~~Through Certificates, Series 2004-~~---------~~R4) (Exact name of registrant as specified in charter) DELAWARE (State or Other Jurisdiction of Incorporation) 333-105982-12 33-0885129 (Commission File Number) (I.R.S. Employer Identification No.) 1100 TOWN & COUNTRY ROAD, SUITE 1100 ORANGE, CALIFORNIA 92868 (Address of ~~Incorporation~~principal executive offices) ~~File~~(Zip ~~Number~~Code) ~~Identification~~Registrant's Telephone Number, Including Area Code: (714) ~~1100~~541-9960 ~~Town~~(Former &name ~~Country~~or ~~Road~~former address, ~~Suite~~if ~~1100~~changed ~~Orange,~~since ~~California~~last ~~92868~~report.) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act (17 CFR 240.14a-12(b)) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-~~-----------~~commencement communications pursuant to Rule 13e-~~----~~4(c) under the Exchange Act (~~Address~~17 CFR 240.13e-4(c)) Item 8.01 Other Events Attached hereto is a copy of ~~Principal~~the ~~Executive~~Monthly ~~Offices)~~Remittance ~~(Zip~~Statements ~~Code~~to the Certificateholders which was derived from the monthly information submitted by the Master Servicer of the Trust to the Trustee. Item 9.01 Financial Statements and Exhibits (c) Exhibits: Exhibit No. Description 99.1 Monthly Remittance Statement to the Certificateholders dated as of September 27, 2004. Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized. Deutsche Bank National Trust Company, in its capacity as Trustee under the Pooling and Servicing Agreement on behalf of Ameriquest Mortgage Securities Inc.,Registrant Date: Sep 27, 2004 By: /s/ Katherine M. Wannenmacher Katherine M. Wannenmacher Vice President EXHIBIT INDEX DOCUMENT 99.1 Monthly Remittance Statement to the Certificateholders dated as of September 27, 2004.

INITIAL CERTIFICATE INITIAL CERTIFICATE PRINCIPAL PASS-THROUGH PRINCIPAL PASS-THROUGH CLASS BALANCE(1) RATE CLASS BALANCE(1) RATE ----- ---------- ---- ----- --------------- A-1B............. $69,184,000.00 Variable(2) M-2............. $44,000,000.00 Variable(2) A-2.............. $65,000,000.00 Variable(2) M-3............. $10,000,000.00 Variable(2) A-3.............. $30,400,000.00 Variable(2) M-4............. $12,500,000.00 Variable(2) A-4.............. $22,757,000.00 Variable(2) M-5............. $10,000,000.00 Variable(2) M-1.............. $76,500,000.00 Variable(2) M-6............. $11,000,000.00 Variable(2)


	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates


	September 27, 2004 Distribution


	Contents



			TABLE OF CONTENTS

								Page

			1.	Contents				1
			2.	Certificate Payment Report				2
			3.	Collection Account Report				4
			4.	Credit Enhancement Report				7
			5.	Collateral Report				8
			6.	Delinquency Report				11
			7.	REO Report				14
			8.	Foreclosure Report				15
			9.	Prepayment Report				16
			10.	Prepayment Detail Report				19
			11.	Realized Loss Report				23
			12.	Realized Loss Detail Report				26
			13.	Triggers, Adj. Rate Cert. and Miscellaneous Report				27
			14.	Other Related Information				28



				Total Number of Pages				28



			CONTACTS

				Administrator: Valerie Delgado
				Direct Phone Number: (714)247-6273
				Address: Deutsche Bank
				1761 E. St. Andrew Place, Santa Ana, CA 92705

				Web Site: https://www.corporatetrust.db.com/invr
				Factor Information: (800) 735-7777
				Main Phone Number: (714) 247-6000



ISSUANCE INFORMATION

	Seller:		Ameriquest Mortgage Corp					Cut-Off Date: May 1, 2004
	Certificate Insurer(s):							Closing Date: May 5, 2004
								First Payment Date: June 25, 2004
	Servicer(s):		Ameriquest Mortgage Corp Master Servicer


								Distribution Date: September 27, 2004
	Underwriter(s):		Morgan Stanley Lead Underwriter					Record Date: September 24, 2004
			Deutsche Bank Securities Co-Lead Underwriter					August 31, 2004
			Merrill Lynch & Co. Co-Lead Underwriter
			Banc of America Securities LLC Underwriter
			J. P. Morgan Underwriter



						Page 1 of 28					© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates
	REMIC II
	Certificate Payment Report for September 27, 2004 Distribution


	Distribution in Dollars - Current Period
					Prior						Current
	Class	Original			Principal			Total	Realized	Deferred	Principal
Class	Type	Face Value			Balance	Interest	Principal	Distribution	Losses	Interest	Balance
					(1)	(2)	(3)	(4)=(2)+(3)	(5)	(6)	(7)=(1)-(3)-(5)+(6)

A-1A	FLT, STEP	622,659,000.00			582,712,926.13	1,038,928.59	20,590,351.53	21,629,280.12	-	-	562,122,574.60
A-1B	FLT, STEP	69,184,000.00			64,745,568.74	117,809.96	2,287,805.81	2,405,615.77	-	-	62,457,762.93
A-2	FLT, STEP	65,000,000.00			55,548,538.26	87,836.13	9,738,988.43	9,826,824.56	-	-	45,809,549.83
A-3	FLT, STEP	30,400,000.00			30,400,000.00	51,414.00	-	51,414.00	-	-	30,400,000.00
A-4	FLT, STEP	22,757,000.00			22,757,000.00	43,702.92	-	43,702.92	-	-	22,757,000.00
M-1	MEZ, FLT, S	76,500,000.00			76,500,000.00	151,820.63	-	151,820.63	-	-	76,500,000.00
M-2	MEZ, FLT, S	44,000,000.00			44,000,000.00	117,571.67	-	117,571.67	-	-	44,000,000.00
M-3	MEZ, FLT, S	10,000,000.00			10,000,000.00	29,012.50	-	29,012.50	-	-	10,000,000.00
M-4	MEZ, FLT, S	12,500,000.00			12,500,000.00	43,140.63	-	43,140.63	-	-	12,500,000.00
M-5	MEZ, FLT, S	10,000,000.00			10,000,000.00	40,012.50	-	40,012.50	-	-	10,000,000.00
M-6	MEZ, FLT, S	11,000,000.00			11,000,000.00	54,097.08	-	54,097.08	-	-	11,000,000.00
M-7	MEZ, FLT, S	13,000,000.00			13,000,000.00	31,162.08	-	31,162.08	-	-	13,000,000.00
CE	SUB	12,999,210.29			12,999,991.03	3,957,129.01	-	3,957,129.01	-	-	12,999,991.03
P	SUB	100.00			100.00	615,598.93	-	615,598.93	-	-	100.00
R	R	-			-	-	-	-	-	-	-


Total		999,999,310.29			946,164,124.16	6,379,236.63	32,617,145.77	38,996,382.40	-	-	913,546,978.39


	Interest Accrual Detail				Current Period Factor Information per $1,000 of Original Face
						Orig. Principal	Prior				Current
	Period	Period				(with Notional)	Principal			Total	Principal
Class	Starting	Ending		Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance
							(1)	(2)	(3)	(4)=(2)+(3)	(5)

A-1A	08/25/04	09/26/04		A-Act/360	03072SRM9	622,659,000.00	935.845987	1.668535	33.068424	34.736959	902.777563
A-1B	08/25/04	09/26/04		A-Act/360	03072SRD9	69,184,000.00	935.845987	1.702850	33.068423	34.771273	902.777563
A-2	08/25/04	09/26/04		A-Act/360	03072SRN7	65,000,000.00	854.592896	1.351325	149.830591	151.181916	704.762305
A-3	08/25/04	09/26/04		A-Act/360	03072SRP2	30,400,000.00	1,000.000000	1.691250	-	1.691250	1,000.000000
A-4	08/25/04	09/26/04		A-Act/360	03072SRE7	22,757,000.00	1,000.000000	1.920417	-	1.920417	1,000.000000
M-1	08/25/04	09/26/04		A-Act/360	03072SRF4	76,500,000.00	1,000.000000	1.984583	-	1.984583	1,000.000000
M-2	08/25/04	09/26/04		A-Act/360	03072SRG2	44,000,000.00	1,000.000000	2.672083	-	2.672083	1,000.000000
M-3	08/25/04	09/26/04		A-Act/360	03072SRH0	10,000,000.00	1,000.000000	2.901250	-	2.901250	1,000.000000
M-4	08/25/04	09/26/04		A-Act/360	03072SRQ0	12,500,000.00	1,000.000000	3.451250	-	3.451250	1,000.000000
M-5	08/25/04	09/26/04		A-Act/360	03072SRJ6	10,000,000.00	1,000.000000	4.001250	-	4.001250	1,000.000000
M-6	08/25/04	09/26/04		A-Act/360	03072SRK3	11,000,000.00	1,000.000000	4.917916	-	4.917916	1,000.000000
M-7	08/25/04	09/26/04		A-Act/360	03072SRR8	13,000,000.00	1,000.000000	2.397083	-	2.397083	1,000.000000
CE				F-30/360		12,999,210.29	73,786.337308	304.413031	-	304.413031	71,277.173671
P				-		100.00	1,000.000000	6,155,989.300000	-	6,155,989.300000	1,000.000000
R				-		-	-	-	-	-	-


							Page 2 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates
	REMIC II
	Certificate Payment Report for September 27, 2004 Distribution


	Distribution in Dollars - to Date
											Current
	Original				Unscheduled	Scheduled	Total	Total	Realized	Deferred	Principal
Class	Face Value		Interest		Principal	Principal	Principal	Distribution	Losses	Interest	Balance
	(1)		(2)		(3)	(4)	(5)=(3)+(4)	(6)=(2)+(5)	(7)	(8)	(9)=(1)-(5)-(7)+(8)

A-1A	622,659,000.00		4,040,368.78		58,306,277.69	2,230,147.71	60,536,425.40	64,576,794.18	-	-	562,122,574.60
A-1B	69,184,000.00		459,763.10		6,478,444.07	247,793.00	6,726,237.07	7,186,000.17	-	-	62,457,762.93
A-2	65,000,000.00		354,198.11		-	19,190,450.17	19,190,450.17	19,544,648.28	-	-	45,809,549.83
A-3	30,400,000.00		191,304.67		-	-	-	191,304.67	-	-	30,400,000.00
A-4	22,757,000.00		166,122.93		-	-	-	166,122.93	-	-	22,757,000.00
M-1	76,500,000.00		580,008.13		-	-	-	580,008.13	-	-	76,500,000.00
M-2	44,000,000.00		466,516.11		-	-	-	466,516.11	-	-	44,000,000.00
M-3	10,000,000.00		116,095.84		-	-	-	116,095.84	-	-	10,000,000.00
M-4	12,500,000.00		175,328.13		-	-	-	175,328.13	-	-	12,500,000.00
M-5	10,000,000.00		164,429.17		-	-	-	164,429.17	-	-	10,000,000.00
M-6	11,000,000.00		225,177.64		-	-	-	225,177.64	-	-	11,000,000.00
M-7	13,000,000.00		122,125.97		-	-	-	122,125.97	-	-	13,000,000.00
CE	12,999,210.29		16,697,538.29		-	-	-	16,697,538.29	-	780.74	12,999,991.03
P	100.00		1,289,674.29		-	-	-	1,289,674.29	-	-	100.00
R	-		-		-	-	-	-	-	-	-


Total	999,999,310.29		25,048,651.16		64,784,721.76	21,668,390.88	86,453,112.64	111,501,763.80	-	780.74	913,546,978.39


	Interest Detail
	Pass-	Prior Principal				Non-	Prior	Unscheduled		Paid or	Current
	Through	(with Notional)			Accrued	Supported	Unpaid	Interest	Optimal	Deferred	Unpaid
Class	Rate	Balance			Interest	Interest SF	Interest	Adjustments	Interest	Interest	Interest
					(1)	(2)	(3)	(4)	(5)=(1)-(2)+(3)+(4)	(6)	(7)=(5)-(6)

A-1A	1.94500%	582,712,926.13			1,038,928.59	-	-	-	1,038,928.59	1,038,928.59	-
A-1B	1.98500%	64,745,568.74			117,809.96	-	-	-	117,809.96	117,809.96	-
A-2	1.72500%	55,548,538.26			87,836.13	-	-	-	87,836.13	87,836.13	-
A-3	1.84500%	30,400,000.00			51,414.00	-	-	-	51,414.00	51,414.00	-
A-4	2.09500%	22,757,000.00			43,702.92	-	-	-	43,702.92	43,702.92	-
M-1	2.16500%	76,500,000.00			151,820.63	-	-	-	151,820.63	151,820.63	-
M-2	2.91500%	44,000,000.00			117,571.67	-	-	-	117,571.67	117,571.67	-
M-3	3.16500%	10,000,000.00			29,012.50	-	-	-	29,012.50	29,012.50	-
M-4	3.76500%	12,500,000.00			43,140.63	-	-	-	43,140.63	43,140.63	-
M-5	4.36500%	10,000,000.00			40,012.50	-	-	-	40,012.50	40,012.50	-
M-6	5.36500%	11,000,000.00			54,097.08	-	-	-	54,097.08	54,097.08	-
M-7	2.61500%	13,000,000.00			31,162.08	-	-	-	31,162.08	31,162.08	-
CE	5.01874%	959,164,115.19			3,957,129.01	-	-	-	3,957,129.01	3,957,129.01	-
P		100.00			615,598.93	-	-	-	615,598.93	615,598.93	-
R		-			-	-	-	-	-	-	-


Total		1,892,328,248.32			6,379,236.63	-	-	-	6,379,236.63	6,379,236.63	-


							Page 3 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Collection Account Report for September 27, 2004 Distribution


	Collection Account Report


SUMMARY						GROUP 2	GROUP 1	TOTAL

	Principal Collections					9,738,988.43	22,878,157.34	32,617,145.77
	Principal Other Accounts					0.00	0.00	0.00
	TOTAL NET PRINCIPAL					9,738,988.43	22,878,157.34	32,617,145.77

	Interest Collections					778,963.71	5,050,755.37	5,829,719.08
	Interest Withdrawals					0.00	0.00	0.00
	Interest Other Accounts					0.00	0.00	0.00
	Interest Fees					(9,307.77)	(56,773.62)	(66,081.38)
	TOTAL NET INTEREST					769,655.94	4,993,981.75	5,763,637.69
	Prepayment Penalties							615,598.93


	TOTAL AVAILABLE FUNDS FOR DISTRIBUTION					10,508,644.37	27,872,139.09	38,996,382.39


PRINCIPAL - COLLECTIONS						GROUP 2	GROUP 1	TOTAL

	Scheduled Principal Received					107,691.61	645,959.57	753,651.18
	Prepayments In Full					9,628,103.82	21,916,504.26	31,544,608.08
	Curtailments					3,193.00	32,708.73	35,901.73
	Liquidations					0.00	0.00	0.00
	Insurance Principal					0.00	0.00	0.00
	Repurchased Principal Amounts					0.00	282,984.78	282,984.78
	Other Principal					0.00	0.00	0.00
	Total Realized Loss Of Principal					0.00	0.00	0.00
	Delinquent Principal					(95,831.44)	(539,828.45)	(635,659.89)
	Advanced Principal					95,831.44	539,828.45	635,659.89

	TOTAL PRINCIPAL COLLECTED					9,738,988.43	22,878,157.34	32,617,145.77


				Page 4 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Collection Account Report for September 27, 2004 Distribution


	Collection Account Report


PRINCIPAL - WITHDRAWALS						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK


PRINCIPAL - OTHER ACCOUNTS						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK


INTEREST - COLLECTIONS						GROUP 2	GROUP 1	TOTAL

	Scheduled Interest					826,748.21	5,331,225.14	6,157,973.35
	Liquidation Interest					0.00	0.00	0.00
	Repurchased Interest					0.00	1,634.04	1,634.04
	Insurance Interest					0.00	0.00	0.00
	Other Interest					0.00	0.00	0.00
	Relief Act Interest Shortfalls					0.00	0.00	0.00
	Prepayment Interest Shortfalls					(7,318.53)	(13,205.00)	(20,523.53)
	Compensating Interest					7,318.53	13,205.00	20,523.53
	Delinquent Interest					(699,656.15)	(4,483,417.03)	(5,183,073.18)
	Interest Advanced					651,871.65	4,201,313.22	4,853,184.87

	TOTAL INTEREST COLLECTED					778,963.71	5,050,755.37	5,829,719.08


				Page 5 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Collection Account Report for September 27, 2004 Distribution


	Collection Account Report


INTEREST - WITHDRAWALS						GROUP 2	GROUP 1	TOTAL

	Trust Fund Expenses							0.00
	Nonrecoverable Advances							0.00
	Reimbursements to Master Servicer							0.00

	TOTAL INTEREST WITHDRAWALS							0.00


INTEREST - OTHER ACCOUNTS						GROUP 2	GROUP 1	TOTAL

	Prepayment Charges							615,598.93


	TOTAL INTEREST OTHER ACCOUNTS					0.00	0.00	615,598.93


INTEREST - FEES						GROUP 2	GROUP 1	TOTAL

	Current Servicing Fees					9,057.66	55,289.09	64,346.75

	Trustee Fee					250.11	1,484.53	1,734.63
	PMI Fees					0.00	0.00	0.00


	TOTAL INTEREST OTHER FEES					9,307.77	56,773.62	66,081.38


				Page 6 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Credit Enhancement Report for September 27, 2004 Distribution


	Credit Enhancement Report


ACCOUNTS						GROUP 2	GROUP 1	TOTAL

	Net WAC Rate Carryover Reserve Account							1,000.00


INSURANCE						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK


STRUCTURAL FEATURES						GROUP 2	GROUP 1	TOTAL

	Overcollateralized Amount							12,999,991.03
	Overcollateralization Reduction Amount							0.00
	Overcollateralization Deficiency Amount							0.00
	Overcollateralization Target Amount							12,999,991.03
	Excess Overcollateralization Amount							0.00
	Overcollateralization Increase Amount							0.00


				Page 7 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Collateral Report for September 27, 2004 Distribution


	Collateral Report


COLLATERAL						GROUP 2	GROUP 1	TOTAL
	Loan Count:
	*Original*					380	6102	6482
	Prior					356	5,845	6,201
	Prefunding					-	-	-
	Scheduled Paid Offs					-	-	-
	Full Voluntary Prepayments					(23)	(129)	(152)
	Repurchases					-	(2)	(2)
	Liquidations					-	-	-
	Current					333	5,714	6,047

	*Principal Balance:*
	Original					145,872,543.18	854,126,767.11	999,999,310.29
	Prior					136,421,183.04	809,742,941.12	946,164,124.16
	Prefunding					-	-	-
	Scheduled Principal					(107,691.61)	(645,959.57)	(753,651.18)
	Partial and Full Voluntary Prepayments					(9,631,296.82)	(21,949,212.99)	(31,580,509.81)
	Repurchases					-	(282,984.78)	(282,984.78)
	Liquidations					-	-	-
	Current					126,682,194.61	786,864,783.78	913,546,978.39

PREFUNDING						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK


	Group 1
	Group 2
Current Prin Balance by Groups (in millions of dollars)					Total Current Principal Balance (in millions of dollars)


				Page 8 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Collateral Report for September 27, 2004 Distribution


	Collateral Report


CHARACTERISTICS						GROUP 2	GROUP 1	TOTAL

	Weighted Average Coupon Original					7.329150%	7.920133%	7.833925%
	Weighted Average Coupon Prior					7.292632%	7.907338%	7.817398%
	Weighted Average Coupon Current					7.272315%	7.903040%	7.812100%
	Weighted Average Months to Maturity Original					355	351	352
	Weighted Average Months to Maturity Prior					353	348	349
	Weighted Average Months to Maturity Current					352	347	348
	Weighted Avg Remaining Amortization Term Original					355	350	351
	Weighted Avg Remaining Amortization Term Prior					353	348	349
	Weighted Avg Remaining Amortization Term Current					352	347	348
	Weighted Average Seasoning Original					2.32	2.43	2.41
	Weighted Average Seasoning Prior					4.32	4.41	4.40
	Weighted Average Seasoning Current					5.32	5.41	5.40

Note: Original information refers to deal issue.


	Group 1
	Group 2
WAC by Groups					Total WAC


WARAT by Groups					Total WARAT


Note: Dates correspond to distribution dates.
				Page 9 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Collateral Report for September 27, 2004 Distribution


	Collateral Report


ARM CHARACTERISTICS						GROUP 2	GROUP 1	TOTAL

	Weighted Average Margin Original					4.717%	4.901%
	Weighted Average Margin Prior					4.744%	4.887%
	Weighted Average Margin Current					4.711%	4.877%
	Weighted Average Max Rate Original					10.713%	11.188%
	Weighted Average Max Rate Prior					10.752%	11.141%
	Weighted Average Max Rate Current					10.649%	11.112%
	Weighted Average Min Rate Original					5.913%	6.388%
	Weighted Average Min Rate Prior					5.923%	6.357%
	Weighted Average Min Rate Current					5.858%	6.339%
	Weighted Average Cap Up Original					0.800%	0.800%
	Weighted Average Cap Up Prior					0.805%	0.797%
	Weighted Average Cap Up Current					0.798%	0.796%
	Weighted Average Cap Down Original					0.800%	0.800%
	Weighted Average Cap Down Prior					0.805%	0.797%
	Weighted Average Cap Down Current					0.798%	0.796%

Note: Original information refers to deal issue.

SERVICING FEES / ADVANCES						GROUP 2	GROUP 1	TOTAL

	Current Servicing Fees					9,057.66	55,289.09	64,346.75
	Delinquent Servicing Fees					47,784.50	282,103.80	329,888.30
	TOTAL SERVICING FEES					56,842.16	337,392.89	394,235.05


	Compensating Interest					(7,318.53)	(13,205.00)	(20,523.53)


	Aggregate Advances with respect to this Distribution					747,703.09	4,741,141.67	5,488,844.76
	Current Nonrecoverable Advances					0.00	0.00	0.00
	Cumulative Nonrecoverable Advances					0.00	0.00	0.00


ADDITIONAL COLLATERAL INFORMATION						GROUP 2	GROUP 1	TOTAL

	Net Prepayment Interest Shortfall					0.00	0.00	0.00

	Aggregate Relief Act Shortfalls							0.00


				Page 10 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Delinquency Report for September 27, 2004 Distribution


	Delinquency Report - Total


				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance			14,640,939.37	6,057,299.53	3,456,842.89	24,155,081.79
		% Balance			1.60%	0.66%	0.38%	2.64%
		# Loans			102	51	22	175
		% # Loans			1.69%	0.84%	0.36%	2.89%
FORECLOSURE		Balance		-	-	-	1,926,111.30	1,926,111.30
		% Balance		0.00%	0.00%	0.00%	0.21%	0.21%
		# Loans		-	-	-	12	12
		% # Loans		0.00%	0.00%	0.00%	0.20%	0.20%
BANKRUPTCY		Balance		2,658,934.37	658,165.40	125,648.36	97,134.11	3,539,882.24
		% Balance		0.29%	0.07%	0.01%	0.01%	0.39%
		# Loans		17	5	2	1	25
		% # Loans		0.28%	0.08%	0.03%	0.02%	0.41%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%

TOTAL		Balance		2,658,934.37	15,299,104.77	6,182,947.89	5,480,088.30	29,621,075.33
		% Balance		0.29%	1.67%	0.68%	0.60%	3.24%
		# Loans		17	107	53	35	212
		% # Loans		0.28%	1.77%	0.88%	0.58%	3.51%
Note: <1 Payment = 0-29days, 1 Payment = 30-59days, 2 Payments = 60-89days, 3+ Payments = 90+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent


Total Foreclosure					Total Bankruptcy and REO


Note: Dates correspond to distribution dates.
				Page 11 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Delinquency Report for September 27, 2004 Distribution


	Delinquency Report - Group 1 Group


				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance			13,360,705.41	6,057,299.53	2,484,887.30	21,902,892.24
		% Balance			1.70%	0.77%	0.32%	2.78%
		# Loans			99	51	20	170
		% # Loans			1.73%	0.89%	0.35%	2.98%
FORECLOSURE		Balance		-	-	-	1,544,577.10	1,544,577.10
		% Balance		0.00%	0.00%	0.00%	0.20%	0.20%
		# Loans		-	-	-	11	11
		% # Loans		0.00%	0.00%	0.00%	0.19%	0.19%
BANKRUPTCY		Balance		2,143,564.71	658,165.40	125,648.36	97,134.11	3,024,512.58
		% Balance		0.27%	0.08%	0.02%	0.01%	0.38%
		# Loans		16	5	2	1	24
		% # Loans		0.28%	0.09%	0.04%	0.02%	0.42%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%

TOTAL		Balance		2,143,564.71	14,018,870.81	6,182,947.89	4,126,598.51	26,471,981.92
		% Balance		0.27%	1.78%	0.79%	0.52%	3.36%
		# Loans		16	104	53	32	205
		% # Loans		0.28%	1.82%	0.93%	0.56%	3.59%
Note: <1 Payment = 0-29days, 1 Payment = 30-59days, 2 Payments = 60-89days, 3+ Payments = 90+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent


Total Foreclosure					Total Bankruptcy and REO


Note: Dates correspond to distribution dates.
				Page 12 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Delinquency Report for September 27, 2004 Distribution


	Delinquency Report - Group 2 Group


				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance			1,280,233.96	-	971,955.59	2,252,189.55
		% Balance			1.01%	0.00%	0.77%	1.78%
		# Loans			3	-	2	5
		% # Loans			0.90%	0.00%	0.60%	1.50%
FORECLOSURE		Balance		-	-	-	381,534.20	381,534.20
		% Balance		0.00%	0.00%	0.00%	0.30%	0.30%
		# Loans		-	-	-	1	1
		% # Loans		0.00%	0.00%	0.00%	0.30%	0.30%
BANKRUPTCY		Balance		515,369.66	-	-	-	515,369.66
		% Balance		0.41%	0.00%	0.00%	0.00%	0.41%
		# Loans		1	-	-	-	1
		% # Loans		0.30%	0.00%	0.00%	0.00%	0.30%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%

TOTAL		Balance		515,369.66	1,280,233.96	-	1,353,489.79	3,149,093.41
		% Balance		0.41%	1.01%	0.00%	1.07%	2.49%
		# Loans		1	3	-	3	7
		% # Loans		0.30%	0.90%	0.00%	0.90%	2.10%
Note: <1 Payment = 0-29days, 1 Payment = 30-59days, 2 Payments = 60-89days, 3+ Payments = 90+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent


Total Foreclosure					Total Bankruptcy and REO


Note: Dates correspond to distribution dates.
				Page 13 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	REO Report for September 27, 2004 Distribution


	REO Report - Mortgage Loans that Become REO During Current Distribution


SUMMARY				LOAN GROUP

Total Loan Count = 0				Loan Group 1 = Group 1; REO Book Value = 000.00
Total Original Principal Balance = 000.00				Loan Group 2 = Group 2; REO Book Value = 000.00
Total Current Balance = 000.00
REO Book Value = 000.00

REO Book Value reported corresponds to total REO loans, including loans that become REO during current distribution.

Loan Number		Original	Stated		Current	State &
&		Principal	Principal	Paid to	Note	LTV at	Original	Origination
Loan Group		Balance	Balance	Date	Rate	Origination	Term	Date
SPACE INTENTIONALLY LEFT BLANK


				Page 14 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Foreclosure Report for September 27, 2004 Distribution


	Foreclosure Report - Mortgage Loans that Become Foreclosure During Current Distribution


SUMMARY				LOAN GROUP

Total Loan Count = 12				Loan Group 1 = Group 1
Total Original Principal Balance = 1,931,138.00				Loan Group 2 = Group 2
Total Current Balance = 1,926,111.30


Loan Number		Original	Stated		Current	State &
&		Principal	Principal	Paid to	Note	LTV at	Original	Origination
Loan Group		Balance	Balance	Date	Rate	Origination	Term	Date

70695440 1		182,000.00	181,379.93	Apr-01-04	7.990%	MI - 82.35%	360	Mar-31-04
70970827 1		77,000.00	76,816.27	Mar-01-04	10.600%	ME - 71.96%	360	Feb-29-04
71430623 1		60,000.00	59,851.61	Apr-01-04	9.550%	CA - 40.27%	360	Mar-05-04
71923643 1		167,000.00	166,699.98	Apr-01-04	11.050%	AR - 84.56%	360	Mar-15-04
72220825 1		210,150.00	209,725.03	Apr-01-04	10.500%	GA - 90.00%	360	Mar-12-04
72316243 1		211,650.00	210,999.74	Apr-01-04	8.500%	CA - 85.00%	360	Mar-12-04
72663123 1		93,538.00	93,375.34	Apr-01-04	11.200%	GA - 74.83%	360	Mar-22-04
73114001 1		85,000.00	84,633.51	Apr-01-04	6.800%	MI - 80.95%	360	Mar-19-04
73326068 1		74,500.00	74,341.06	Apr-01-04	10.250%	IL - 83.71%	360	Mar-18-04
73486904 1		64,800.00	64,604.93	Apr-01-04	8.600%	AL - 88.77%	360	Mar-24-04
74007568 1		323,000.00	322,149.70	Apr-01-04	9.250%	IL - 85.00%	360	Mar-26-04
72204423 2		382,500.00	381,534.20	Apr-01-04	9.450%	IL - 85.00%	360	Mar-11-04


				Page 15 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Prepayment Report for September 27, 2004 Distribution


	Prepayment Report - Voluntary Prepayments


VOLUNTARY PREPAYMENTS						GROUP 2	GROUP 1	TOTAL

	*Current*
	Number of Paid in Full Loans					23	129	152
	Number of Repurchased Loans					-	2	2
	Total Number of Loans Prepaid in Full					23	131	154

	Paid in Full Balance					9,628,103.82	21,916,504.26	31,544,608.08
	Repurchased Loans Balance					-	282,984.78	282,984.78
	Curtailments Amount					3,193.00	32,708.73	35,901.73
	Total Prepayment Amount					9,631,296.82	22,232,197.77	31,863,494.59

	*Cumulative*
	Number of Paid in Full Loans					44	340	384
	Number of Repurchased Loans					3	48	51
	Total Number of Loans Prepaid in Full					47	388	435

	Paid in Full Balance					17,713,497.53	57,827,417.03	75,540,914.56
	Repurchased Loans Balance					998,691.91	6,475,913.00	7,474,604.91
	Curtailments Amount					17,794.40	319,247.41	337,041.81
	Total Prepayment Amount					18,729,983.84	64,622,577.44	83,352,561.28

SPACE INTENTIONALLY LEFT BLANK


Total Prepayments by Groups (in thousands of dollars)					Total Prepayments (in thousands of dollars)


				Page 16 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Prepayment Report for September 27, 2004 Distribution


	Prepayment Report - Voluntary Prepayments


VOLUNTARY PREPAYMENT RATES						GROUP 2	GROUP 1	TOTAL

	SMM					7.07%	2.75%	3.37%
	3 Months Avg SMM					4.01%	2.02%	2.31%
	12 Months Avg SMM
	Avg SMM Since Cut-off					3.39%	1.95%	2.16%

	CPR					58.49%	28.42%	33.73%
	3 Months Avg CPR					38.77%	21.77%	24.45%
	12 Months Avg CPR
	Avg CPR Since Cut-off					33.86%	21.07%	23.03%

	PSA					5492.61%	2625.16%	3122.63%
	3 Months Avg PSA Approximation					4487.63%	2464.46%	2776.91%
	12 Months Avg PSA Approximation
	Avg PSA Since Cut-off Approximation					4431.19%	2687.04%	2947.91%



	Group 1
	Group 2


CPR by Groups					Total CPR


PSA by Groups					Total PSA


				Page 17 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Prepayment Report for September 27, 2004 Distribution


	Prepayment Report - Voluntary Prepayments

	Group 1
	Group 2

CPR Avg since Cut-Off by Groups					Total CPR Avg since Cut-Off


PSA Avg since Cut-Off by Groups					Total PSA Avg since Cut-Off


PREPAYMENT CALCULATION METHODOLOGY
Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases)/(Beg Principal Balance - Sched Principal)
Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)
PSA Standard Prepayment Model: CPR/(0.02*min(30,WAS))
Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn) * (1-SMMn+1) .......(1-SMMm)]^(1/months in period n,m)
Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^12)
Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.002*Avg WASn,m))
Average WASn,m: (min(30,WASn)+min(30,WASn+1)+.......+min(30,WASm)/(number of months in the period n,m)
Weighted Average Seasoning (WAS)

Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments and repurchases.
Dates correspond to distribution dates.

				Page 18 of 28				© COPYRIGHT 2004 Deutsche Bank


	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Prepayment Detail Report for September 27, 2004 Distribution


	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution


SUMMARY						LOAN GROUP

Total Loan Count = 154						Loan Group 1 = Group 1
Total Original Principal Balance = 32,049,516.00						Loan Group 2 = Group 2
Total Prepayment Amount = 31,827,592.86


Loan Number			Original			Current	State &	Type Prepayment
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	&	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Original Term	Date

52414901 1			66,600.00	66,292.28	Aug-31-04	9.990%	FL - 60.00%	Paid Off - 360	Sep-10-03
56278187 1			111,500.00	110,868.62	Aug-23-04	8.990%	MI - 71.94%	Paid Off - 360	Sep-26-03
57130742 1			113,600.00	110,810.73	Aug-31-04	8.990%	PA - 80.00%	Paid Off - 180	Oct-23-03
57856304 1			99,000.00	98,686.70	Aug-31-04	11.250%	GA - 60.00%	Paid Off - 360	Oct-31-03
58165143 1			86,400.00	85,992.64	Sep-01-04	9.350%	MA - 73.85%	Paid Off - 360	Oct-10-03
58297102 1			69,000.00	68,683.01	Aug-20-04	9.500%	MI - 63.89%	Paid Off - 360	Oct-31-03
59213207 1			146,200.00	145,596.86	Aug-18-04	9.990%	CO - 85.00%	Paid Off - 360	Oct-30-03
59272625 1			126,000.00	122,244.91	Aug-31-04	6.700%	WI - 68.11%	Paid Off - 180	Oct-16-03
59355164 1			148,750.00	148,238.29	Sep-02-04	10.850%	FL - 85.00%	Paid Off - 360	Oct-30-03
60112208 1			188,000.00	186,977.05	Aug-18-04	8.650%	NJ - 80.00%	Paid Off - 360	Oct-29-03
60358546 1			184,500.00	183,602.90	Aug-31-04	9.200%	MD - 73.80%	Paid Off - 360	Oct-29-03
60598489 1			85,000.00	84,462.14	Aug-13-04	7.900%	NJ - 85.00%	Paid Off - 360	Oct-31-03
62328828 1			123,250.00	122,799.89	Aug-20-04	9.990%	NY - 88.04%	Paid Off - 360	Nov-21-03
64578701 1			60,000.00	59,682.38	Sep-03-04	7.500%	MA - 58.82%	Paid Off - 360	Dec-31-03
65795767 1			126,000.00	125,692.86	Aug-23-04	10.500%	WA - 75.00%	Paid Off - 360	Jan-27-04
66962721 1			329,000.00	327,650.46	Sep-03-04	7.990%	CA - 70.00%	Paid Off - 360	Jan-28-04
67584086 1			160,000.00	159,454.91	Sep-01-04	7.990%	NY - 48.48%	Paid Off - 360	Mar-02-04
68681725 1			196,000.00	195,104.39	Sep-02-04	6.500%	NY - 61.25%	Paid Off - 360	Feb-12-04
69121283 1			200,000.00	199,366.48	Sep-01-04	8.350%	NY - 60.61%	Paid Off - 360	Feb-09-04
69177525 1			61,250.00	61,088.76	Aug-31-04	9.250%	CA - 81.67%	Paid Off - 360	Feb-13-04
69278240 1			148,000.00	147,636.47	Aug-31-04	9.650%	NY - 53.82%	Paid Off - 360	Feb-10-04
69759421 1			267,000.00	265,890.68	Sep-01-04	6.990%	CA - 63.57%	Paid Off - 360	Feb-26-04
69771368 1			153,000.00	152,655.14	Aug-31-04	9.990%	FL - 90.00%	Paid Off - 360	Feb-11-04
69953388 1			225,000.00	224,154.56	Sep-03-04	7.500%	CA - 90.00%	Paid Off - 360	Feb-28-04
70408406 1			131,750.00	131,596.56	Aug-27-04	11.990%	KY - 85.00%	Paid Off - 360	Mar-15-04
70528062 1			157,500.00	156,994.17	Sep-01-04	7.150%	MS - 90.00%	Paid Off - 360	Mar-31-04
70554704 1			313,000.00	312,105.84	Aug-18-04	7.750%	CA - 86.94%	Paid Off - 360	Mar-29-04
70594445 1			315,000.00	314,144.33	Sep-09-04	7.990%	MD - 78.16%	Paid Off - 360	Mar-10-04
70766365 1			215,190.00	214,471.23	Aug-27-04	6.950%	CA - 90.00%	Paid Off - 360	Mar-03-04
71142566 1			266,000.00	265,118.46	Aug-31-04	6.990%	MA - 78.24%	Paid Off - 360	Mar-19-04
71175384 1			155,000.00	153,859.23	Aug-11-04	7.450%	IL - 67.10%	Paid Off - 360	Mar-03-04
71224109 1			151,200.00	150,751.39	Aug-26-04	7.550%	NH - 70.00%	Paid Off - 360	Mar-04-04
71241103 1			195,000.00	192,320.33	Sep-01-04	6.100%	CA - 89.99%	Paid Off - 180	Mar-03-04
71289508 1			98,000.00	97,742.23	Aug-27-04	8.150%	NH - 55.37%	Paid Off - 360	Mar-16-04
71314728 1			160,000.00	159,712.67	Aug-24-04	9.990%	IL - 84.21%	Paid Off - 360	Mar-12-04
71347728 1			95,000.00	94,663.47	Sep-02-04	6.650%	RI - 56.21%	Paid Off - 360	Mar-08-04
71353825 1			90,000.00	89,842.10	Sep-01-04	10.100%	IL - 75.00%	Paid Off - 360	Mar-05-04
71439608 1			161,000.00	160,755.85	Aug-12-04	10.800%	NH - 57.50%	Paid Off - 360	Mar-05-04
71533384 1			81,080.00	80,915.15	Sep-01-04	9.400%	IL - 64.86%	Paid Off - 360	Mar-12-04
71768063 1			112,000.00	3,507.86	Aug-20-04	8.750%	AZ - 84.85%	Paid Off - 360	Mar-22-04
71769541 1			408,000.00	406,676.72	Sep-01-04	7.100%	NY - 77.71%	Paid Off - 360	Mar-11-04
71792501 1			225,000.00	224,388.78	Sep-01-04	7.990%	CA - 84.91%	Paid Off - 360	Mar-16-04
71885701 1			282,000.00	281,020.57	Aug-31-04	6.750%	MA - 77.26%	Paid Off - 360	Mar-08-04
71891683 1			326,000.00	325,013.37	Aug-31-04	7.450%	MA - 89.32%	Paid Off - 360	Mar-23-04

					Page 19 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Prepayment Detail Report for September 27, 2004 Distribution


	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution



Loan Number			Original			Current	State &
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	Original	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Term	Date

71901268 1			208,000.00	207,664.65	Aug-18-04	10.500%	NY - 84.90%	Paid Off - 360	Mar-08-04
71953723 1			164,000.00	163,554.48	Aug-20-04	7.990%	CA - 80.00%	Paid Off - 360	Mar-11-04
71977243 1			178,500.00	178,179.47	Aug-25-04	9.990%	IL - 85.00%	Paid Off - 360	Mar-04-04
72035249 1			82,500.00	82,252.76	Aug-24-04	7.500%	FL - 75.00%	Paid Off - 360	Mar-08-04
72121023 1			243,750.00	243,087.86	Aug-24-04	7.990%	CA - 75.00%	Paid Off - 360	Mar-12-04
72259880 1			142,500.00	142,184.45	Sep-08-04	8.990%	CA - 75.00%	Paid Off - 360	Mar-30-04
72284888 1			105,600.00	105,267.48	Aug-24-04	7.250%	WY - 80.00%	Paid Off - 360	Mar-29-04
72296668 1			256,500.00	255,881.25	Aug-30-04	8.850%	MD - 90.00%	Paid Off - 360	Mar-10-04
72297609 1			102,000.00	101,688.20	Aug-20-04	7.400%	OH - 85.00%	Paid Off - 360	Mar-09-04
72317225 1			103,269.00	103,052.35	Sep-08-04	9.250%	FL - 73.76%	Paid Off - 360	Mar-09-04
72319866 1			170,000.00	167,935.91	Aug-24-04	7.550%	NY - 62.96%	Paid Off - 180	Mar-29-04
72347487 1			190,000.00	189,447.43	Aug-16-04	7.650%	MA - 31.67%	Paid Off - 360	Mar-06-04
72366669 1			79,128.00	78,567.97	Aug-31-04	9.300%	MN - 90.00%	Paid Off - 240	Mar-11-04
72430325 1			157,500.00	157,144.70	Aug-25-04	8.900%	CO - 75.00%	Paid Off - 360	Mar-17-04
72485543 1			153,750.00	153,269.34	Aug-30-04	9.300%	MD - 75.00%	Paid Off - 360	Mar-18-04
72552748 1			177,000.00	176,519.19	Aug-27-04	7.990%	MD - 86.76%	Paid Off - 360	Mar-19-04
72566144 1			185,000.00	184,578.35	Sep-10-04	8.850%	NY - 61.67%	Paid Off - 360	Mar-22-04
72612526 1			70,000.00	69,825.01	Sep-01-04	8.400%	FL - 62.50%	Paid Off - 360	Mar-19-04
72692601 1			300,000.00	299,301.97	Aug-11-04	8.750%	CA - 75.00%	Paid Off - 360	Mar-24-04
72749047 1			186,000.00	185,469.77	Aug-30-04	7.750%	CT - 80.87%	Paid Off - 360	Mar-15-04
72804966 1			60,000.00	59,867.12	Aug-25-04	8.990%	OK - 73.17%	Paid Off - 360	Mar-23-04
72842982 1			297,500.00	296,466.76	Aug-31-04	6.750%	CA - 83.80%	Paid Off - 360	Mar-18-04
72864549 1			232,000.00	231,465.73	Aug-12-04	8.800%	RI - 80.00%	Paid Off - 360	Mar-30-04
72891567 1			107,000.00	106,773.17	Aug-25-04	9.200%	GA - 62.94%	Paid Off - 360	Mar-17-04
72915507 1			198,000.00	197,605.75	Aug-31-04	9.500%	CA - 90.00%	Paid Off - 360	Mar-31-04
72962947 1			81,000.00	80,016.51	Aug-17-04	7.550%	TN - 77.14%	Paid Off - 180	Mar-26-04
72982903 1			232,000.00	231,112.55	Aug-24-04	6.250%	CA - 78.64%	Paid Off - 360	Mar-30-04
73002206 1			180,000.00	179,739.13	Aug-23-04	10.990%	FL - 74.38%	Paid Off - 360	Mar-26-04
73020083 1			143,000.00	142,552.79	Aug-18-04	7.400%	CA - 40.86%	Paid Off - 360	Mar-15-04
73020109 1			118,500.00	118,178.09	Sep-10-04	7.990%	CA - 74.06%	Paid Off - 360	Mar-31-04
73118804 1			125,000.00	124,625.43	Sep-02-04	7.500%	CA - 54.59%	Paid Off - 360	Mar-16-04
73217341 1			180,000.00	179,374.83	Aug-17-04	6.750%	WI - 90.00%	Paid Off - 360	Mar-19-04
73240400 1			252,000.00	251,442.02	Aug-18-04	8.990%	MD - 90.00%	Paid Off - 360	Mar-31-04
73244006 1			84,000.00	83,781.29	Aug-31-04	8.200%	RI - 43.08%	Paid Off - 360	Mar-15-04
73295321 1			99,000.00	98,727.92	Aug-12-04	8.250%	CA - 69.72%	Paid Off - 360	Mar-24-04
73345308 1			94,000.00	93,841.95	Aug-26-04	10.300%	IL - 69.63%	Paid Off - 360	Mar-30-04
73391286 1			100,000.00	99,700.33	Aug-25-04	7.500%	MA - 74.07%	Paid Off - 360	Mar-26-04
73452625 1			251,600.00	250,916.57	Aug-18-04	7.990%	MA - 83.92%	Paid Off - 360	Mar-22-04
73478026 1			163,000.00	162,481.63	Sep-03-04	7.200%	MD - 89.56%	Paid Off - 360	Mar-24-04
73551764 1			290,400.00	289,529.80	Aug-12-04	7.500%	AZ - 80.00%	Paid Off - 360	Mar-31-04
73609380 1			272,400.00	271,497.24	Aug-12-04	6.990%	IL - 85.13%	Paid Off - 360	Mar-31-04
73611667 1			162,500.00	162,029.57	Sep-08-04	7.990%	MN - 65.00%	Paid Off - 360	Mar-31-04
73615148 1			165,750.00	165,440.18	Sep-07-04	9.800%	CA - 85.00%	Paid Off - 360	Mar-29-04
73657728 1			225,000.00	224,336.67	Aug-12-04	7.990%	IL - 90.00%	Paid Off - 360	Mar-25-04
73700544 1			228,500.00	227,742.70	Sep-10-04	6.990%	CA - 89.61%	Paid Off - 360	Mar-26-04
73776106 1			246,000.00	245,067.98	Aug-19-04	6.300%	CA - 82.00%	Paid Off - 360	Mar-30-04
73812323 1			146,701.00	146,176.44	Sep-09-04	6.600%	NV - 69.86%	Paid Off - 360	Mar-25-04
73875627 1			233,000.00	232,604.11	Sep-01-04	10.250%	WA - 84.73%	Paid Off - 360	Mar-31-04
73890402 1			174,250.00	173,800.91	Aug-31-04	8.250%	CA - 85.00%	Paid Off - 360	Mar-31-04
73927345 1			216,000.00	215,655.81	Sep-01-04	10.550%	FL - 75.00%	Paid Off - 360	Mar-31-04
73948085 1			115,500.00	115,168.14	Aug-31-04	7.750%	MI - 55.10%	Paid Off - 360	Mar-31-04
73973224 1			178,500.00	178,067.25	Sep-03-04	8.550%	MN - 85.00%	Paid Off - 360	Mar-31-04

					Page 20 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Prepayment Detail Report for September 27, 2004 Distribution


	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution



Loan Number			Original			Current	State &
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	Original	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Term	Date

73979007 1			297,500.00	296,978.13	Aug-25-04	10.100%	CT - 85.00%	Paid Off - 360	Mar-31-04
74004847 1			182,750.00	182,404.75	Sep-01-04	9.750%	RI - 85.00%	Paid Off - 360	Mar-31-04
74011644 1			146,000.00	145,535.69	Sep-02-04	7.200%	MD - 85.88%	Paid Off - 360	Mar-30-04
74077363 1			131,250.00	130,856.69	Aug-20-04	7.500%	FL - 74.15%	Paid Off - 360	Mar-24-04
74120445 1			167,000.00	166,546.33	Aug-31-04	7.990%	IL - 74.55%	Paid Off - 360	Mar-31-04
74170143 1			250,000.00	249,068.75	Sep-09-04	6.500%	CA - 73.53%	Paid Off - 360	Mar-26-04
74213885 1			267,750.00	266,820.04	Aug-13-04	6.750%	RI - 85.00%	Paid Off - 360	Mar-30-04
74222381 1			320,000.00	318,666.60	Sep-03-04	5.800%	CA - 88.89%	Paid Off - 360	Mar-31-04
74227885 1			329,000.00	328,234.52	Sep-01-04	8.750%	IL - 74.94%	Paid Off - 360	Mar-31-04
74317801 1			183,000.00	182,528.38	Sep-09-04	8.250%	NY - 65.36%	Paid Off - 360	Mar-26-04
74318668 1			153,000.00	152,584.37	Aug-27-04	7.990%	FL - 75.00%	Paid Off - 360	Mar-31-04
74336686 1			138,000.00	137,694.42	Aug-26-04	8.990%	FL - 83.64%	Paid Off - 360	Mar-31-04
74403627 1			125,000.00	124,674.04	Aug-26-04	8.500%	NY - 36.76%	Paid Off - 360	Mar-31-04
74405903 1			157,500.00	157,094.09	Sep-02-04	8.250%	KS - 90.00%	Paid Off - 360	Mar-31-04
74441247 1			225,000.00	224,543.11	Aug-31-04	7.990%	CA - 77.59%	Paid Off - 360	Mar-29-04
74457409 1			142,500.00	141,975.58	Aug-31-04	9.400%	MD - 75.00%	Paid Off - 360	Mar-30-04
74467804 1			188,000.00	187,425.32	Sep-01-04	7.400%	MA - 80.00%	Paid Off - 360	Mar-30-04
74495565 1			127,000.00	126,579.09	Aug-26-04	6.990%	FL - 69.02%	Paid Off - 360	Mar-29-04
74569161 1			240,000.00	239,348.05	Sep-01-04	7.990%	NY - 75.00%	Paid Off - 360	Mar-31-04
74594144 1			127,000.00	126,600.08	Sep-02-04	7.250%	CA - 65.13%	Paid Off - 360	Mar-31-04
74656505 1			61,750.00	61,620.42	Aug-31-04	9.250%	ME - 65.00%	Paid Off - 360	Mar-31-04
74687963 1			300,000.00	299,185.06	Sep-02-04	7.990%	CA - 75.00%	Paid Off - 360	Mar-30-04
74738469 1			165,000.00	164,579.05	Aug-25-04	8.300%	FL - 75.00%	Paid Off - 360	Mar-31-04
74744749 1			234,887.00	233,942.83	Aug-17-04	5.990%	CA - 90.00%	Paid Off - 360	Mar-30-04
74780263 1			139,000.00	138,740.14	Aug-19-04	9.800%	FL - 78.09%	Paid Off - 360	Mar-31-04
74910225 1			71,250.00	70,381.14	Aug-13-04	7.500%	IL - 43.77%	Paid Off - 180	Mar-31-04
74955501 1			229,000.00	228,219.98	Aug-24-04	6.850%	IL - 83.27%	Paid Off - 360	Mar-31-04
75044065 1			156,000.00	155,372.92	Aug-26-04	5.990%	CA - 69.03%	Paid Off - 360	Mar-31-04
75071621 1			105,009.00	104,793.24	Aug-31-04	9.350%	IN - 88.99%	Paid Off - 360	Mar-31-04
75154005 1			118,000.00	117,765.06	Aug-17-04	9.500%	CA - 65.56%	Paid Off - 360	Mar-31-04
75192146 1			152,000.00	151,348.49	Aug-23-04	5.650%	NV - 80.00%	Paid Off - 360	Mar-31-04
76182666 1			86,700.00	86,611.34	Sep-07-04	11.250%	DE - 85.00%	Paid Off - 360	Apr-26-04
77317725 1			68,000.00	67,894.18	Aug-18-04	9.300%	CA - 80.00%	Paid Off - 360	Apr-26-04
59552489 2			99,000.00	97,292.09	Aug-30-04	7.250%	TN - 90.00%	Paid Off - 240	Oct-23-03
67089664 2			369,170.00	367,486.58	Aug-19-04	7.750%	MN - 67.24%	Paid Off - 360	Jan-23-04
68529908 2			536,000.00	533,801.39	Sep-03-04	7.990%	FL - 74.97%	Paid Off - 360	Jan-31-04
69116127 2			600,000.00	597,976.19	Sep-08-04	6.900%	CA - 77.92%	Paid Off - 360	Mar-04-04
70135405 2			384,900.00	383,352.83	Aug-24-04	5.990%	CT - 28.94%	Paid Off - 360	Mar-15-04
71615926 2			338,390.00	337,203.24	Aug-12-04	6.700%	CA - 89.52%	Paid Off - 360	Mar-31-04
72069123 2			355,000.00	353,730.62	Sep-07-04	6.600%	OH - 89.87%	Paid Off - 360	Mar-10-04
72654908 2			499,999.00	498,228.39	Aug-19-04	6.650%	CA - 89.93%	Paid Off - 360	Mar-18-04
72766769 2			599,999.00	598,829.18	Aug-24-04	9.600%	CA - 64.86%	Paid Off - 360	Mar-16-04
73042020 2			382,000.00	380,266.31	Sep-02-04	5.650%	CA - 87.82%	Paid Off - 360	Mar-30-04
73184640 2			600,000.00	598,110.73	Aug-17-04	7.250%	WA - 75.00%	Paid Off - 360	Mar-25-04
73293367 2			360,000.00	358,687.58	Sep-02-04	6.500%	CA - 66.67%	Paid Off - 360	Mar-22-04
73336828 2			531,000.00	528,509.22	Sep-09-04	6.400%	CA - 90.00%	Paid Off - 360	Mar-30-04
73594541 2			354,695.00	353,780.90	Aug-25-04	8.250%	CA - 84.45%	Paid Off - 360	Mar-31-04
73627747 2			340,000.00	338,661.61	Aug-17-04	6.100%	CA - 85.00%	Paid Off - 360	Mar-25-04
73887226 2			362,500.00	361,152.76	Aug-25-04	6.400%	CA - 81.46%	Paid Off - 360	Mar-31-04
73932840 2			420,000.00	418,916.93	Aug-13-04	8.250%	CA - 84.85%	Paid Off - 360	Mar-25-04
73972705 2			600,000.00	597,525.38	Aug-25-04	5.950%	CA - 78.95%	Paid Off - 360	Mar-29-04
74096124 2			400,000.00	399,083.35	Aug-27-04	9.450%	CA - 86.02%	Paid Off - 360	Mar-31-04

					Page 21 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Prepayment Detail Report for September 27, 2004 Distribution


	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution



Loan Number			Original			Current	State &
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	Original	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Term	Date

74351206 2			432,000.00	430,233.62	Aug-31-04	5.900%	CA - 88.16%	Paid Off - 360	Mar-31-04
74704685 2			338,000.00	336,682.11	Aug-16-04	6.150%	CA - 73.48%	Paid Off - 360	Mar-31-04
75044503 2			348,500.00	347,601.86	Sep-08-04	8.250%	CA - 85.00%	Paid Off - 360	Mar-31-04
75071365 2			412,000.00	410,990.95	Sep-08-04	8.500%	MA - 51.50%	Paid Off - 360	Mar-31-04
69525806 1			153,000.00	151,815.75	Aug-30-04	7.300%	MI - 61.20%	Repur/Subs - 360	Feb-25-04
74659608 1			131,649.00	131,169.03	Aug-30-04	6.500%	FL - 58.82%	Repur/Subs - 360	Mar-30-04


					Page 22 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Realized Loss Report for September 27, 2004 Distribution


	Realized Loss Report - Collateral


COLLATERAL REALIZED LOSSES						GROUP 2	GROUP 1	TOTAL

	*Current*
	Number of Loans Liquidated					-	-	-
	Collateral Realized Loss/(Gain) Amount					-	-	-
	Net Liquidation Proceeds					-	-	-

	*Cumulative*
	Number of Loans Liquidated					-	-	-
	Collateral Realized Loss/(Gain) Amount					-	-	-
	Net Liquidation Proceeds					-	-	-

	Note: Collateral Realized Loss Amount may include adjustments to loans liquidated in prior periods.

SPACE INTENTIONALLY LEFT BLANK


	Group 1						3 Months Moving Average
	Group 2

Collateral Loss Severity Approximation by Groups					Collateral Loss Severity Approximation


				Page 23 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Realized Loss Report for September 27, 2004 Distribution


	Realized Loss Report - Collateral


DEFAULT SPEEDS						GROUP 2	GROUP 1	TOTAL

	MDR					0.00%	0.00%	0.00%
	3 Months Avg MDR					0.00%	0.00%	0.00%
	12 Months Avg MDR
	Avg MDR Since Cut-off					0.00%	0.00%	0.00%

	CDR					0.00%	0.00%	0.00%
	3 Months Avg CDR					0.00%	0.00%	0.00%
	12 Months Avg CDR
	Avg CDR Since Cut-off					0.00%	0.00%	0.00%

	SDA					0.00%	0.00%	0.00%
	3 Months Avg SDA Approximation					0.00%	0.00%	0.00%
	12 Months Avg SDA Approximation
	Avg SDA Since Cut-off Approximation					0.00%	0.00%	0.00%

	Loss Severity Approximation for Current Period
	3 Months Avg Loss Severity Approximation
	12 Months Avg Loss Severity Approximation
	Avg Loss Severity Approximation Since Cut-off

	Group 1
	Group 2
CDR by Groups					Total CDR


SDA by Groups					Total SDA


				Page 24 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Realized Loss Report for September 27, 2004 Distribution


	Realized Loss Report - Collateral

	Group 1
	Group 2

CDR Avg since Cut-Off by Groups					Total CDR Avg since Cut-Off


SDA Avg since Cut-Off by Groups					Total SDA Avg since Cut-Off


COLLATERAL REALIZED LOSS CALCULATION METHODOLOGY
Monthly Default Rate (MDR): (Beg Principal Balance of Liquidated Loans)/(Total Beg Principal Balance)
Conditional Default Rate (CDR): 1-((1-MDR)^12)
SDA Standard Default Assumption: CDR/IF(WAS<61,MIN(30,WAS)0.02,MAX(0.03,MIN(30,WAS)0.02-0.0095*(WAS-60)))
Average MDR over period between nth month and mth month (AvgMDRn,m): [(1-MDRn) * (1-MDRn+1) .......(1-MDRm)]^(1/months in period n,m)
Average CDR over period between the nth month and mth month (AvgCDRn,m): 1-((1-AvgMDRn,m)^12)
Average SDA Approximation over period between the nth month and mth month:
AvgCDRn,m/IF(Avg WASn,m<61,MIN(30,Avg WASn,m)0.02,MAX(0.03,MIN(30,Avg WASn,m)0.02-0.0095*(Avg WASn,m-60)))
Average WASn,m: (WASn + WASn+1 +.......+ WASm )/(number of months in the period n,m)
Loss Severity Approximation for current period: sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)
Average Loss Severity Approximation over period between nth month and mth month: Avg(Loss Severityn,m)
Note: Default rates are calculated since deal issue date and include realized gains and additional realized losses and gains from prior periods.
Dates correspond to distribution dates.

				Page 25 of 28				© COPYRIGHT 2004 Deutsche Bank


	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Realized Loss Detail Report for September 27, 2004 Distribution


	Realized Loss Detail Report - Loans Liquidated During Current Distribution

SUMMARY							LOAN GROUP
Total Loan Count Current Losses = 0
Total Loan Count Revisions = 0						Loan Group 1 = Group 1
Total Prior Principal Balance = 0.00						Loan Group 2 = Group 2
Total Current Realized Loss Amount = 0.00
Total Revisions Amount = 0.00
Total Realized Loss Amount = 0.00
Total Net Liquidation Proceeds = 0.00
Note: Total Realized Loss Amount may include adjustments to loans liquidated in prior periods.

Loan Number			Current	State &		Prior	Realized		Cumulative
&		Loan	Note	LTV at	Original	Principal	Loss/(Gain)	Realized	Realized
Loan Group		Status	Rate	Origination	Term	Balance	Revisions	Loss/(Gain)	Loss/(Gain)
SPACE INTENTIONALLY LEFT BLANK


					Page 26 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Triggers, Adj. Rate Cert. and Miscellaneous Report for September 27, 2004 Distribution


	Triggers, Adj. Rate Cert. and Miscellaneous Report


TRIGGER EVENTS						GROUP 2	GROUP 1	TOTAL

	Trigger Event in effect							No
	Stepdown Date has occurred							No

	Balances 60+ days							14,980,135.96
	Ending Balance							913,546,978.39
	Delinquency Percentage							1.64%

	Balance of Mezzanine and C Class							189,999,991.03
	Ending Balance							913,546,978.39
	Credit Enhancement Percentage							20.80%


ADJUSTABLE RATE CERTIFICATE INFORMATION						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK


ADDITIONAL INFORMATION						GROUP 2	GROUP 1	TOTAL

	Libor for Current Period							1.615000%
	Current Period loan level losses							0.00
	Current Recoveries or Losses from Prior periods							0.00
	Total Current Losses							0.00


				Page 27 of 28				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2004-R4
	Mortgage Pass-Through Certificates

	Other Related Information for September 27, 2004 Distribution


	Other Related Information


ADDITIONAL INFORMATION						GROUP 2	GROUP 1	TOTAL

	Class A-1A Next Pass-Through Rate							2.170000%
	Class A-1B Next Pass-Through Rate							2.210000%
	Class A-2 Next Pass-Through Rate							1.950000%
	Class A-3 Next Pass-Through Rate							2.070000%
	Class A-4 Next Pass-Through Rate							2.320000%
	Class M-1 Next Pass-Through Rate							2.390000%
	Class M-2 Next Pass-Through Rate							3.140000%
	Class M-3 Next Pass-Through Rate							3.390000%
	Class M-4 Next Pass-Through Rate							3.990000%
	Class M-5 Next Pass-Through Rate							4.590000%
	Class M-6 Next Pass-Through Rate							5.590000%
	Class M-7 Next Pass-Through Rate							2.840000%


	Net WAC Rate Carryover Amt:ClassA-1A							0.00
	Net WAC Rate Carryover Amt:ClassA-1B							0.00
	Net WAC Rate Carryover Amt:ClassA-2							0.00
	Net WAC Rate Carryover Amt:ClassA-3							0.00
	Net WAC Rate Carryover Amt:ClassA-4							0.00
	Net WAC Rate Carryover Amt:ClassM-1							0.00
	Net WAC Rate Carryover Amt:ClassM-2							0.00
	Net WAC Rate Carryover Amt:ClassM-3							0.00
	Net WAC Rate Carryover Amt:ClassM-4							0.00
	Net WAC Rate Carryover Amt:ClassM-5							0.00
	Net WAC Rate Carryover Amt:ClassM-6							0.00
	Net WAC Rate Carryover Amt:ClassM-7							0.00


				Page 28 of 28				© COPYRIGHT 2004 Deutsche Bank

Exhibit No. Description ----------- ----------- 4.1 Pooling and Servicing Agreement, dated as of May 1, 2004, by and among Ameriquest Mortgage Securities Inc. as Depositor, Ameriquest Mortgage Company as Master Servicer and Deutsche Bank National Trust Company as Trustee relating to the Series 2004-R4 Certificates.

Index to Exhibits ----------------- Sequentially Exhibit No. Description Numbered Page ----------- ----------- ------------- 4.1 Pooling and Servicing Agreement, dated as of May 1, 7 2004, by and among Ameriquest Mortgage Securities Inc. as Depositor, Ameriquest Mortgage Company as Master Servicer and Deutsche Bank National Trust Company as Trustee relating to the Series 2004-R4 Certificates.

Filing Compare · AMERIQUEST MORTGAGE SECURITIES INC ASSET-BACKED PASS-THROUGH CERTIFICATES SERIES 2004-R4