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      03-01-2012, 11:01 AM   #9
AlpWhite11
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Drives: 335i
Join Date: Apr 2009
Location: Irvine

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M5 Canuck is right. It's a prerecorded sound that's heard in the cabin. But it's probably so subtle that it'll all sound ok even when combined with the sound from an aftermarket exhaust.
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