FAST 90/90 Set Up
Thread Starter
Burning Brakes
Joined: Sep 2001
Posts: 1,005
Likes: 6
From: Denver, NC
FAST 90/90 Set Up
Looking for opinions...
First my current mods on a built A4 99 coup.
I also have some surging at idle that could probably be fixed if I drill a small hole in my 78 mm TB throttle plate but not really wanting to do that. I think a larger 90 mm TB would also address that....Agree or disagree??
Please advise your thoughts on all this if you can...would really appreciate any input...Thanks-
First my current mods on a built A4 99 coup.
- 402 forged and stroked engine.
- LS6 intake, 78 mm TB
- 60 lb Moltron injectors
- 98 Fuel rail system with KB Boost Pump, LPE Fuel pump
- Alky Injection
- Z06 3:42 rear hard driver side shaft
- Procharger D1, 8 rib system, 13 lbs boost
- 3000 stall, Protorque convertor
- Blower cam
- 611 RWHP and 600 RWT on 90 degree day.
- Run consistant 10.05-10.16 in 1/4 mile.
I also have some surging at idle that could probably be fixed if I drill a small hole in my 78 mm TB throttle plate but not really wanting to do that. I think a larger 90 mm TB would also address that....Agree or disagree??
Please advise your thoughts on all this if you can...would really appreciate any input...Thanks-
Former Vendor
Joined: Mar 2004
Posts: 1,518
Likes: 7
From: Valencia CA
Get one and have it ported to maximize your return....
It's probably worth 15-25 RWHP (peak) depending on cylinder heads, exhaust, and the rest of the combination. It will also carry better past peak (power will hang on a bit longer) which will allow you to shift a few hundred RPM higher which will help the next gear start a little higher up in the RPM band so your average power thru the run will be up noticably.
It should get you the tenth and a half or so your looking for....
What heads are on this engine btw?
Tony
PS....The SOTP and throttle response will also noticably improve.....a nice fringe benefit of the swap.
It's probably worth 15-25 RWHP (peak) depending on cylinder heads, exhaust, and the rest of the combination. It will also carry better past peak (power will hang on a bit longer) which will allow you to shift a few hundred RPM higher which will help the next gear start a little higher up in the RPM band so your average power thru the run will be up noticably.
It should get you the tenth and a half or so your looking for....
What heads are on this engine btw?
Tony
PS....The SOTP and throttle response will also noticably improve.....a nice fringe benefit of the swap.
Last edited by Tony Mamo @ AFR; Nov 23, 2007 at 08:44 PM.
