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      03-13-2018, 09:36 AM   #9
Jeff@TopGearSolutions
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Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

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It's a boost leak for sure. If you have any aftermarket parts such as an intercooler or charge pipe I would check and tighten those connections first as they are likely the culprit.

If you're bone stock under warranty, let the dealer figure it out haha.
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