Thread: Burger Motorsports JB4 Performance Tuner???
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      07-19-2014, 04:45 PM   #12
M-terkait
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Drives: F30 335i 3/13
Join Date: Mar 2013
Location: Kuwait

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Originally Posted by J1n View Post
The dealer I go to here seems to be cool with it
Hi , are you using JB4 stage 2 or 1?
I have FBO f30 335i but i use jb4 , if any1 can tell how is stage 1 with downpipes ; I'm asking for a friend with 640i
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