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      01-11-2012, 03:47 PM   #12
Brucewonder
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Drives: 2011 E92 M3 yea boi
Join Date: Nov 2007
Location: Socal

iTrader: (4)

switch out the muffler...xpipe will give more volume and rasp. try installing your stock muffler and see if it still drones.
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2011.5 E92 ///M3 SSII/FR