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      10-30-2008, 01:30 PM   #1
mtme90m3
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Drives: 2008 M3 Sedan
Join Date: Oct 2008
Location: North Jersey

Posts: 7
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Tuning a 2009 M3 Coupe

I just picked up my 2008 M3 sedan this week ( wife's car ) and absolutly love it. I plan on ordering a 2009 coupe this weekend and was wondering aside from exhaust, what can be done to increase HP without voiding warrenty on car. Thanks
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