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      01-11-2013, 07:59 PM   #2
BMWM.D.
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Drives: E90 335i & 6th Gen ZL1
Join Date: May 2009
Location: Santa Barbara

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That almost sounds like the transmission is slipping on the upshift. This is an automatic, right? But if it's totally fine at stock boot levels, I doubt you'll get it fixed under warranty. A bad HPFP is another story.
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