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      06-10-2011, 10:05 AM   #15
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Drives: Green Bastard
Join Date: Jun 2007
Location: Bishop Bend

Posts: 3,554
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I ran M3s with and without the performance exhaust at the track this week. The Exhaust sounds awesome, nearly no drone and on the track the car sounds completely different. That's the good news, bad news I didn't feel much of a performance boost.
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