Thread: Did JB4 tune
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      01-14-2013, 09:21 PM   #16
Lifted07Duramax
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Drives: 2008 BMW red 335i coupe
Join Date: Jan 2013
Location: springfield, mo

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I just put the JB4 with G4 board set on Map 2 on my car. Car is bone stock otherwise and it is night and day difference. Car pulls hard now
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