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Old 11-07-2011, 06:39 AM   #7
bannonm

 
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Drives: 2011 2SS/RS M6 VR
Join Date: Aug 2011
Location: Chicagoland
Posts: 1,536
Quote:
Originally Posted by Jrichards73 View Post
Too bad most of the restriction is in the headers and cats.... replacing everything after that doesnt really do much, and only changes sound if you don't do anything forward of the res.
+1. Replacing just the cats can net you up to 20HP. I replaced my exhaust from the cats back and zilch. Better sound for sure.
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