Thread: M550i Downpipe
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      10-03-2019, 03:04 PM   #4
mike@x-ph.com
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Drives: 2007 e92 335i / 2013 F30 328
Join Date: Sep 2013
Location: Las Vegas

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If it smells inside the cabin, your downpipe does not fit well and you have a leak.

Wait for a trusted brand to release their downpipe