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      10-26-2017, 09:01 PM   #11
SixPost
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Drives: 2015 650i Xdrive Alpine White
Join Date: Sep 2016
Location: Parts Unknown

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Cold Start

Ive been trying to figure out if the exhaust valves are supposed to be open during cold start. From your experience, it sounds like you noticed that it was much louder cold starting with the flaps wired open, than it was in stock configuration... This would suggest that the valves are normally closed during a cold start.... would you agree???

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