Real Header/exhaust HP increase
Thread Starter
Melting Slicks
Joined: Feb 2004
Posts: 2,903
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From: I finished a Marathon, did you? Michigan
CI 6-7, 9-10 Veteran
Real Header/exhaust HP increase
I am having my LG headers with cats installed on tuesday with the Corsa Indies that arrived yesterday. What kind of REALISTIC HP gains will I see?? I had it dynoed last year on a Mustang Dyno and I hit 303 RWHP and 315 RWTQ with only an air filter change. I do plan on getting a dyno tune soon afterward, but was wondering what I could expect. Thanks in advance! 
Burning Brakes
Joined: Dec 2004
Posts: 905
Likes: 0
From: Rhode Island
Originally Posted by yelloyello
I am having my LG headers with cats installed on tuesday with the Corsa Indies that arrived yesterday. What kind of REALISTIC HP gains will I see?? I had it dynoed last year on a Mustang Dyno and I hit 303 RWHP and 315 RWTQ with only an air filter change. I do plan on getting a dyno tune soon afterward, but was wondering what I could expect. Thanks in advance!
Racer
Joined: Jun 2004
Posts: 431
Likes: 1
From: Northern NJ nj
Originally Posted by yelloyello
I am having my LG headers with cats installed on tuesday with the Corsa Indies that arrived yesterday. What kind of REALISTIC HP gains will I see?? I had it dynoed last year on a Mustang Dyno and I hit 303 RWHP and 315 RWTQ with only an air filter change. I do plan on getting a dyno tune soon afterward, but was wondering what I could expect. Thanks in advance!
I have Indies and have been asking similar questions. Most responses said 25 - 35 HP
Burning Brakes
Joined: Mar 2003
Posts: 966
Likes: 43
From: Lansing MI
Originally Posted by yelloyello
I am having my LG headers with cats installed on tuesday with the Corsa Indies that arrived yesterday. What kind of REALISTIC HP gains will I see?? I had it dynoed last year on a Mustang Dyno and I hit 303 RWHP and 315 RWTQ with only an air filter change. I do plan on getting a dyno tune soon afterward, but was wondering what I could expect. Thanks in advance!
Let me know how it goes! I'm curious to see what it does after the install. Next time at Milan I'll get to see your taillights! I'm jealous your getting your car out so soon. I can't till April 1. Good luck. Jeff
