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03-10-2010, 08:22 PM
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#9
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Enlisted Member 
Drives: '12 e92 m3
Join Date: May 2009
Location: Los Angeles, CA
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http://www.m3post.com/forums/showthread.php?t=253661
Quote:
Originally Posted by bame_E92
Does anyone know the best way to up the noise on the 2009 E92 OEM exhaust? I want to keep the stock exhaust so I'm just looking for something to add that extra roar. I heard of some kind of valve that can be installed but I'm not sure exactly what it's called. Any suggestions?  |
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