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      05-27-2012, 11:06 PM   #148
First Lieutenant

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Drives: 2011 335i xDrive M-sport
Join Date: Dec 2011
Location: Portland, OR

Posts: 341
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Originally Posted by Noncom23 View Post
Anyone else notice RPM surging up and down at cold start?
As it warms it idles more smoothly?

I notice this, too, and even hear the engine slightly sound up and down every second. Kind of annoying, but I assume it's just normal as they said here.
'11 6AT 335i xDrive ///M BMW PPK Stage 1