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      01-10-2013, 07:01 PM   #14
ahschell's Avatar
Drives: 2008 328xi
Join Date: Jan 2013
Location: KS

Posts: 55
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2008 BMW 328xi  [2.75]
Ive hear good and bad things about the BMS Powerbox. They claim gains of 10 hp but dynos show about a gain of 5 hp. Im more interested in the throttle remap and I am considering buying one. Ive also heard that it downshifts constantly and is jerky. Can anyone tell me more about the powerbox, experience with it, etc?
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