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      09-09-2012, 11:02 PM   #2
BiG22DuBz
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Drives: X5M
Join Date: Nov 2011
Location: Sunny SoCal

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You can try a race catted downpipe. A couple forum members have them and can chime in
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2014 M5...AMS downpipes, BMS tune, lead foot
2011 X5M....Downpipes, exhaust, dyno tuned
2008 Ducati 848....pearl white, Termignoni exhaust
CLS55 and C6Z06 (previous rides)
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