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      08-29-2012, 10:07 PM   #3
First Lieutenant
Drives: 2009 Crimson Red 135i
Join Date: Mar 2008
Location: Sterling, Va

Posts: 304
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2009 BMM 135i  [4.75]
I've had it help - was going into some sort of limp mode (1/2 filled engine), but after running the heat during the next 7 sessions - no problems. Now I always run the heat during track events. I just close the center vents, and let it blow out the windows.
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