ASP vs. AWE MAF Housing

surfnturf · 11-29-2005, 02:14 AM

ASP says their billet housing is 85mm, AWE doesn't state size. Does anybody know the size of the AWE one? They look almost identical in the pics, so I'd assume it's close.

[badmoon] · 11-29-2005, 03:30 AM

I believe someone said it was 102mm at the sensor, but it has a 45 degree step so it starts at like 78mm and steps up, two totally different designs. It depends on what software you'll be running. If you're going homebrew stick with the ASP one.

2000s4biturbo::Uli · 11-29-2005, 05:29 AM

DAP@EPL · 11-29-2005, 05:55 AM

IIRC, the ASP MAF starts at ~78mm (which is the max possible using the stock airbox) and gently tapers out to 85mm.

-Dave Pramanik

2000s4biturbo::Uli · 11-29-2005, 06:29 AM

mbox · 11-29-2005, 06:53 AM

Like others have said, AWE's is stepped and ASP's is tapered to fit the stock box but you have to modify the box before it will work correctly.

I ran crazy rich when the ASP MAF was mated with an unmodified stock airbox fouling my plugs and clogging my Delphi's. I have since made a custom 99/60 so the airflow could be straighter before it reaches the sensor.

I know most stage 3 cars are using modified airboxes so this may be true with more MAF's than just the ASP. I'm just recalling from experience.

Todd/A.W.E. · 11-29-2005, 07:18 AM

As we've been preaching forever, the turbulence originates *before* the MAF, which is why a laminar screen or cone filter helps smooth out the MAF signal.

The step is our housing is not the problem as you yourself have seen by having issues with a "stepless" design.

Thanks for sharing this info with the forum.

[badmoon] · 11-29-2005, 07:46 AM

Marin S4 · 11-29-2005, 07:51 AM

2000s4biturbo::Uli · 11-29-2005, 08:13 AM

i run an 88 buehn right now.

11-29-2005, 02:14 AM	#1
surfnturf New Member Garage is empty, add now Join Date: Feb 2005 Posts: 262	ASP vs. AWE MAF Housing ASP says their billet housing is 85mm, AWE doesn't state size. Does anybody know the size of the AWE one? They look almost identical in the pics, so I'd assume it's close.

11-29-2005, 03:30 AM	#2
[badmoon] Senior Member Garage is empty, add now Join Date: Sep 2002 Posts: 6,020	AWE uses a stepped MAF I believe someone said it was 102mm at the sensor, but it has a 45 degree step so it starts at like 78mm and steps up, two totally different designs. It depends on what software you'll be running. If you're going homebrew stick with the ASP one.

11-29-2005, 05:29 AM	#3
2000s4biturbo::Uli Elder Member Garage is empty, add now Join Date: Nov 2003 Posts: 14,238	ASP is tapered. its not 85mm all the way through. just an FYI. __________________ MY BABIES a.k.a. CARS you want the best for your car? tell him i sent you. FATS database NOT stock ;^P nogaro 6mt my00, casa 6mt my01.5

11-29-2005, 05:55 AM	#4
DAP@EPL Audiworld Sponsor Garage is empty, add now Join Date: Jun 2000 Posts: 19,700	Because the S4 airbox outlet isn't 85mm. IIRC, the ASP MAF starts at ~78mm (which is the max possible using the stock airbox) and gently tapers out to 85mm. -Dave Pramanik __________________

11-29-2005, 06:29 AM	#5
2000s4biturbo::Uli Elder Member Garage is empty, add now Join Date: Nov 2003 Posts: 14,238	that sounds right,., __________________ MY BABIES a.k.a. CARS you want the best for your car? tell him i sent you. FATS database NOT stock ;^P nogaro 6mt my00, casa 6mt my01.5

11-29-2005, 06:53 AM	#6
mbox AudiWorld Super User Garage is empty, add now Join Date: Jan 2005 Posts: 2,724	I couldn't use the ASP without straightening the airflow before the sensor. Like others have said, AWE's is stepped and ASP's is tapered to fit the stock box but you have to modify the box before it will work correctly. I ran crazy rich when the ASP MAF was mated with an unmodified stock airbox fouling my plugs and clogging my Delphi's. I have since made a custom 99/60 so the airflow could be straighter before it reaches the sensor. I know most stage 3 cars are using modified airboxes so this may be true with more MAF's than just the ASP. I'm just recalling from experience.

11-29-2005, 07:18 AM	#7
Todd/A.W.E. Member Garage is empty, add now Join Date: Mar 2000 Posts: 4,109	Hallelujah! People are finally seeing the light! ;) Step in housing is not the devil! As we've been preaching forever, the turbulence originates before the MAF, which is why a laminar screen or cone filter helps smooth out the MAF signal. The step is our housing is not the problem as you yourself have seen by having issues with a "stepless" design. Thanks for sharing this info with the forum. __________________ Todd Sager President A.W.E. Tuning Order line: 1-888-565-2257 Tech line: 215-658-1670

11-29-2005, 07:46 AM	#8
[badmoon] Senior Member Garage is empty, add now Join Date: Sep 2002 Posts: 6,020	If you have an RS4 airbox Buehn can make a straight thru 85mm MAF housing :P yummy

11-29-2005, 07:51 AM	#9
Marin S4 Member Garage is empty, add now Join Date: Jun 2001 Posts: 2,571	anyone that has an extra AWE maf housing laying around kindly e-mail me. __________________

11-29-2005, 08:13 AM	#10
2000s4biturbo::Uli Elder Member Garage is empty, add now Join Date: Nov 2003 Posts: 14,238	or you can mod your box ;) i run an 88 buehn right now. __________________ MY BABIES a.k.a. CARS you want the best for your car? tell him i sent you. FATS database NOT stock ;^P nogaro 6mt my00, casa 6mt my01.5

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