Quote:
Originally Posted by TripleU
Hi guys, recently my M2 has really rough cold starts where the engine starts off sluggish, and RPMs dip below 500 RPM where the car sounds like it is about to die before going back up.
This happens only during cold starts and the car starts up no problem after that during the day. Any info what is the problem?
Car is stock with just under 30,000 miles.
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I have had this exact same behavior on my '16 M2 since I got it a year ago (did the same cold start stumble on stock tune and the carbahn tune). I tried the MAF sensor unplug procedure listed above last week, but nothing has changed. I'm curious if any of you M2 owners (or N55) just live with this? Or is this cold start stumble really worth chasing down multiple rabbit holes? It's amazing how many people have stories about what has seemingly fixed this, but no consensus yet on what it is the definitive solution? Thanks in advance..