Thread: Mods this week - exhaust
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      12-03-2012, 12:56 PM   #5
benzy89
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Drives: '08 E90 335i
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2008 BMW 335i  [7.50]
Quote:
Originally Posted by demontwinz View Post
an aftermarket exhaust is only for sound? It really doesn't add much HP. I believe 3-8 HP, depending on exhaust?
The OEM 335i catback exhaust is good until you get to 500 WHP
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