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Old 02-05-2013, 06:12 PM
bmwoem1 bmwoem1 is offline
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Location: New York
 
Join Date: Jan 2013
Posts: 617
Mein Auto: X3
I was thinking you had a 530i for some reason.... Since you have a 545i, that's a different story... That rough cold start idle is usually due to your minimum valve lift adjustment. It's set at 0.3mm from factory. I set it 0.8 and raise the idle about 50 rpm when I come across this complaint.... You would need a bmw dealer scan tool to do it... Not sure about the aftermarket stuff
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