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      03-03-2013, 05:28 PM   #13
Surfrider
Polar Bear Power > HP
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Drives: 2013 X6 50i M-Sport
Join Date: Jan 2012
Location: Abroad

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Fairly sure all the 50i models do the same. On my old 2012 X5 50i M Sport, a cold start would certainly be louder but would fall off and quiet down after 10-20 seconds. It would get loud again under full throttle as well.
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