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      03-25-2012, 10:45 AM   #46
m3an
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Drives: M3
Join Date: Oct 2010
Location: South Florida

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the ACM exhaust mod is identical to running a muffler delete/straight pipes. Save the money and just weld up some straight pipe, and save tons of weight. I have had a muffler delete and it doesn't drone, sounds quiet at idle and is def not even as loud as my gintani race (which are mufflers)
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