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      07-02-2009, 02:37 PM   #16
Wires
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Drives: 2016 340i xDrive
Join Date: Apr 2008
Location: Calgary

iTrader: (0)

I believe it's normal. At idle, they lean out the engine for maximum efficiency. During that time, power output is lower, and the engine is less forgiving to changes in engine load (aka A/C compressor suddenly snapping on).

My GM vehicles do the same.