Thread: tune?
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      09-29-2015, 11:42 AM   #7
arkow
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Drives: 2012 X3 35i, 2019 M2 Comp
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Quote:
Originally Posted by mike@x-ph.com View Post
The JB stage 1 adds 3.5 psi boost . Works on 91 and 93 octane.
You can adjust boost as well with the USB cable
Is there a major difference between JB stage 1 and JB4 other than more power with Jb4?
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