Originally Posted by mophreakous
Hey Jerry, what kind of gains do you think one would get with a cat back, iridium plugs and k&n's with the tune? So cool of you to offer this!!!
Thanx,
ChrIs
You won't see many (if any) extra gains from the catback. My best educated guess would be 20-25hp from the tune, and another 5-10hp total from iridiums+k&Ns.