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      01-23-2020, 04:53 PM   #51
dtla1
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Drives: 2011 135i, Space Grey
Join Date: Apr 2014
Location: Silicon Valley

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Quote:
Originally Posted by frenzy757 View Post
Anyone else have any info here? I also ran some highway pulls and boost seems to be limited to 6-7PSI in 1st and 2nd gear, 3rd gear goes up to 15psi, which seems more normal. Just wondering what could have caused this as mods were installed by a PO and not me.
Are you sure you have a GIAC tune installed on the car? Boost limiting by gear is a pretty common setting using a JB4, not saying you have a JB4, just that what you describe is a common and easily achievable modification by the JB4.
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