Quote:
Originally Posted by Drace1
JB4 is honestly a great product. Terry is extremely customer service oriented, always researching and adding new features to his JB4. The on the fly map switching, fuel - boost gauge monitor and other tweaks are all amazing.
It's definitely a great way to go and its price is right.
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Still have my JB, that I uninstalled off my 135i in the garage..
Undecided whether to upgrade the JB or just wait for the flash tunes to evolve.