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      09-01-2012, 09:25 PM   #5
Drives: 2011 ZCP M3 - 2007 335i crashd
Join Date: Apr 2009
Location: NYC

Posts: 6,777
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Originally Posted by gatorfast View Post
Oem mod is what you are looking for. Will be much louder outside but basically same as stock inside.
+1..except its wont be as loud as OP wants at WOT

OP what your asking for is not possible...ridculous loud at WOT and still normal decibel at cruising...unless you do some kind of e-valve exhaust setup
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