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      02-25-2013, 11:35 AM   #6
jetblackcoupe
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Drives: 2008 e92 335i 6MT
Join Date: Apr 2011
Location: NJ

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Haha you guys are brutal acting like you knew what a muffler delete was right out the womb

Replace the muffler with a straight pipe

Very minimal hp, mostly for sound

Shouldn't affect emissions since you're not touching the catalytic converters

A shop should probably do it not a friend

Warranty depends on your dealership, probably shouldn't be a problem