Thread: JB4 on the M2
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      01-10-2018, 08:49 AM   #3
F87_LCI
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Drives: 2018 LBB F87
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I thought I read on here somewhere that without doing a few upgrades (bigger turbo, change IC, improve intake, swap DP) that the JB4 isn't going to do much for a stock M2. Stock config is not limited by boost/maps/software, rather it is the hardware that is "holding it back".
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