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      08-07-2011, 10:12 PM   #39
iPhoneEngineer
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Drives: 2007 BMW Z4 M Coupe
Join Date: Jun 2010
Location: La Honda, CA

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Any update? Have a dyno yet?

I'm dealing with a pretty similarly mysterious set of underperformance issues with my Z4M's VT2-500 (an unfortunately-popular thread in the Z4 section).
Appreciate 0