Mod HP Gain
Thread Starter
Drifting
Joined: Apr 2000
Posts: 1,442
Likes: 209
From: Lake Mary Florida
Mod HP Gain
What is a reasonable, conservative estimate for the RWHP gain for the following mods on a stock 1998 A4 2.73 Coupe:
2002 Z06 Airbox
K&N Filter
Bassani X-Pipe
Borla Stinger Cat-Back Exhaust
Thanks
2002 Z06 Airbox
K&N Filter
Bassani X-Pipe
Borla Stinger Cat-Back Exhaust
Thanks
Burning Brakes
Joined: Jan 2004
Posts: 851
Likes: 103
From: St Louis, MO
HP gain
Originally Posted by BIGMAC
What is a reasonable, conservative estimate for the RWHP gain for the following mods on a stock 1998 A4 2.73 Coupe:
2002 Z06 Airbox
K&N Filter
Bassani X-Pipe
Borla Stinger Cat-Back Exhaust
Thanks
2002 Z06 Airbox
K&N Filter
Bassani X-Pipe
Borla Stinger Cat-Back Exhaust
Thanks
twinflow air intake w/ K&N filters
power duct
Borla Stinger Cat-Back Exhaust
I just had ran my car on a Mustang dyno and I am at 290 at the rear wheels. If you add 25% to those numbers I am at about 365 at the flywheel.
Stock is 345, so a gain of about 20 at the flywheel and about 14 at the rear wheels.
I am installing 3:90 gears, LGM long tube headers and a Weiand LS6 intake manifold next week. I will have the car tuned and run on the dyno.
I hope to get 330 at the wheels and 410 at the flywheel.
Let me know if you are interested in the results.
Melting Slicks
Joined: Oct 2002
Posts: 2,855
Likes: 0
Mustang dyno has a whole diff set of numbers--I think on a dynojet you would be noticably higher--the 390s will read about 15 rwhp lower---I would skip the weiland it will rob 10 to 30rwhp from your motor it is a heatsink--you can polish them and make them pretty but they rob power so if you are looking for an increase in power this intake will take back everything else you have done to the car--get an ls6 intake or go ahead with a 90mm FAST setup when you are ready to do the heads and cam.
Team Owner
Joined: Aug 2003
Posts: 38,314
Likes: 35
Originally Posted by BIGMAC
What is a reasonable, conservative estimate for the RWHP gain for the following mods on a stock 1998 A4 2.73 Coupe:
2002 Z06 Airbox
K&N Filter
Bassani X-Pipe
Borla Stinger Cat-Back Exhaust
Thanks
2002 Z06 Airbox
K&N Filter
Bassani X-Pipe
Borla Stinger Cat-Back Exhaust
Thanks
I'd say 5-10.. The Z06 airlid and K&N will be the limiting factors. Though better than stock, still leaves a lot to be desired vs a good aftermarket intake system IMO. I ran the Z06 airlid and K&N, along with my Corsas, then went to a Blackwing and picked up about 18 horses after doing so.
My A4 dynoed out at 300 RWHP with the Blackwing and Corsas, when I had 2.73s. And about 281 and some change with the Z06 airlid/K&N setup..
