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BMW M5 F90 (2018+) General Forums Engine, Exhaust, Drivetrain, Tuning Modifications    JB4 F90 Tune

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      05-02-2020, 04:05 PM   #1
Jeremybf80
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JB4 F90 Tune

Specifically I was curious if you can adjust the aggressiveness and length of burbles and pops using jb4s new tune for the f90. I want power gains but I don't want my car sounding like a fake anti lag civic from Hialeah.
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      05-02-2020, 05:32 PM   #2
DannyA
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I don't think you can add or remove crackle maps with the JB4
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      05-03-2020, 10:41 AM   #3
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Exhaust burbles are one of the few things you can't do with a JB4 they require the full warranty void reflash. But if you're looking to unlock super car like performance, JB4 has you covered.

Last edited by Fuel-It!; 05-04-2020 at 10:23 AM..
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      05-03-2020, 09:46 PM   #4
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If you want to change the length of your burbles without voiding your warranty I'll PM you how
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      05-04-2020, 08:35 AM   #5
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Quote:
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If you want to change the length of your burbles without voiding your warranty I'll PM you how
This can also be done with a bad diet.
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      05-04-2020, 10:23 AM   #6
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This can also be done with a bad diet.
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      05-04-2020, 06:57 PM   #7
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Quote:
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I don't think you can add or remove crackle maps with the JB4
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      05-22-2020, 10:45 AM   #8
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Just pressing the exhaust button removes burbles and crackles on downshifting and deceleration.
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