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      08-01-2012, 12:58 PM   #22
Rich@GTBPerformance
Bimmerpost Sponsor and BMW Performance Guru
 
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Drives: 2011 M3
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A pretty impressive bump in power for a retune. Love the work Cobb does!

I've always been a big fan of the N55 midpipe mod. Glad you are liking it too!
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