Explanation of boost?
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11-08-2012, 10:04 AM
Drives: 2008 335i M sport
Join Date: Oct 2011
Ive seen a post saying a member is only making x psi on JB4.
Yes it could have been a boost leak, WG issue etc.
But my question is does different maps on the JB4 create different psi levels?
Last edited by E93Blackhawk; 11-08-2012 at
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