Quote:
Originally Posted by E90ice
Shiv's car made about 365whp without the DP's....so it looks like a 25whp gain.
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Problem is you can't assume that because he has catback, could be that 10 or so of that HP gain gets choked out on the stock exhaust. Guess most people will get both though, all the "full catless sounds like shit" talk worries me though.