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      09-02-2007, 04:54 AM   #13
swamp2
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Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

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All the answers

Wait... epiphany... I got it

The muffler is so ugly that the surronding air will be really scared of it thereby moving faster around it and providing a "super diffuser" effect. Yeah BMW.