6Post.com | BMW 6-Series Forum - View Single Post - Can my N63 TU 650i always sound like it does during cold start?

Walt White Coupe · 05-29-2021, 04:10 PM

I could be wrong but I think only two things happen in a cold start. The engine idle speed is kicked up for 30 to 40 seconds and the exhaust flaps are opened.

05-29-2021, 04:10 PM	#6
Walt White Coupe Captain 222 Rep 738 Posts Drives: 2013 650ix Coupe, 23 C8 Vette Join Date: Mar 2011 Location: Phila, PA iTrader: (0)	I could be wrong but I think only two things happen in a cold start. The engine idle speed is kicked up for 30 to 40 seconds and the exhaust flaps are opened.
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