Thread: JB4?
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      04-24-2012, 08:44 PM   #4
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eyim1988's Avatar
Drives: 2013 335i M Sport
Join Date: Feb 2011
Location: Los Angeles, CA

Posts: 1,528
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oh you'll def feel the extra power and torque. When you first turn it on you might get a check engine lights while driving. pull over and turn off car, wait a minute and then turn it back on. It should be gone for good.