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      09-20-2012, 07:39 AM   #24
MilehighM3
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Drives: E90 M3
Join Date: May 2011
Location: Colorado Springs


Posts: 2,161
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Above 4k feet in elevation, the car adds 1 psi of boost for every 1k feet. Up to 8k feet. The car isn't targeting a certain boost level, it's just trying to maintain a similar response and feel of being at lower elevations.