Thread: JB4 on x3 m40i - update!!!@ 400hp+ monster
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      02-26-2018, 11:24 AM   #85
iManu
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Drives: 2018 X3M40i
Join Date: Oct 2015
Location: Montreal

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What do you guys think about the JB+ vs the JB4? The JB+ has up to 4psi boost increase over stock, will this apply to the M40i?
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