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      12-30-2012, 10:00 AM   #12
Mak135i
First Lieutenant
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Drives: 911 GTS, X3M
Join Date: Apr 2010
Location: Tampa, FL

iTrader: (2)

I think BT cable is a must-have if you are going to tune. I had it for 2 years with my JB4 tuned 135i and I always used it before any warranty work (HPFP issues) and regular maintenance. It NEVER let me down.
I downloaded a new file and now it works very well with my F30 and showed the error codes associated with an electric fan malfunction that the dealer was denying!

Great investment if you are getting the JB.
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2019 911 GTS
2017 M4 CV
2017 Mini JCW
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