Thread: Not a n00b, but I've got a few questions before buying a 1 series.
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      03-04-2014, 10:53 PM   #11
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Drives: 2015 M3, 2008 135i, 2009 335i
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Quote:
Originally Posted by T3AM PAT View Post
Definitely jb4
I get that JB4 is the way to go. But how does this JB3 work? Can I connect to it to modify things, or is it a set tune? Can I just unplug it and put it back to factory without any hassle?
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