c5chris
20+ Year Contributor
- 1,346
- 4
- Jan 7, 2003
-
SoCal,
California
im not a believer in exhaust systems other than it's just all sound and no added hp - well maybe 2-5 hp tops. i rather add headers and do something before the cats than add something after it. but thats for my other car. for the dsm say, i add a greddy catback or an rsr catback, how much power will i add? i want to hear from people who added them and dynoed to prove it.