Thread: JB4, 08 135i
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      03-28-2011, 09:50 PM   #3
Mak135i
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Drives: 911 GTS, X3M
Join Date: Apr 2010
Location: Tampa, FL

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I have had JB4 for 90 days. It definitely lives up to all it's advertised to be and you can do a code clearing, map resetting, data logging with lap top. If you follow instructions carefully, installation is pretty straight forward but takes about 1 hour.
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