E46Fanatics - View Single Post - Whistling on Acceleration and Lean codes
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Old 11-09-2012, 08:07 AM   #3
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Join Date: Nov 2005
Location: Phoenix
Posts: 270
My Ride: BMW FTW
Had the same thing. Air intake boot closest to the manifold had a crack in it allowing air to rush in (Whistle) and bypass the MAF causing the lean conditions.

Last edited by smooth1; 11-09-2012 at 08:07 AM.
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