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      09-14-2010, 09:11 PM   #1
First Lieutenant
Drives: 2008 E90 M3
Join Date: Oct 2009
Location: St Petersburg, Florida

Posts: 383
iTrader: (0)

fluttering sound

at about half throttle in first and second, there is a mechanical fluttering(best way I can think to explain it). Anyone know if this is a problem or is it normal?
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