Thread: Jb4 Chip
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      01-21-2012, 12:52 PM   #2
Blue135i
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Drives: 2008 BMW 135i
Join Date: Oct 2010
Location: No. VA

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it is my understanding from exchanging pm's with some of the guys that the JB4 chip will give the 1M similar gains as it did for your 135. I am running a JB4 myself, would love to see one on a 1M. You should talk to Terry or someone on N54 tech about you putting it on your new ride
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