The ultimate tune for your S58 powered G87 M2, G80 M3, and G82 M4, the JB4 allows you to go from factory stock to full race, and everywhere in between. Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures. Technical Sections Engine / Drivetrain / Exhaust / Bolt-ons / Tuning Jb4 S58 Step By Step Install Thread Tools Bookmarks « Previous Thread Next Thread.
The ultimate tune for your S58-powered G80 M3 and G82 M4, the JB4 allows you to go from factory stock to full race and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune, including user-adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol fuel support, and built. The ultimate tune for your S58-powered G80 M3 and G82 M4, the JB4 allows you to go from factory stock to full race and everywhere in between.
The JB4. The ultimate tune for your S58 powered G87 M2, G80 M3, or G82 M4, the JB4 allows you to go from factory stock to full race and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune, including user-adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol fuel support, and built.
Often imitated but never duplicated the JB4 has been the gold standard in plug and play turbocharged performance tuning for over a decade. DYNO G80 M3 JB4 Dyno, 30% E85 fuel, JB4, BMS S58 Intake Tags: S58 Tuning, JB4 G80, JB4 G82. S58 JB4 Tuner for 2021+ BMW G80 M3 & G82 G83 M4 Tuning Box.
Enhance your performance today with this tuning box! Worldwide express shipping, available now! JB4 Tuner, Intakes, wheel spacers, ethanol content sensors, and accessories for the BMW G80 M3, BMW G82 G83 M4, and the BMW G87 M2! S58 JB4 Tuner for 2021+ BMW G80 M3, G82 G83 M4, & 2023+ G87 M2 Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures.
The ultimate tune for your S58 powered G87 M2, G80 M3, or G82 M4, the JB4 allows you to go from factory stock to full race and everywhere in between. The ultimate tune for your S58 powered G87 M2, G80 M3, or G82 M4, the JB4 allows you to go from factory stock to full race and everywhere in between. The JB4 installs and removes easily and includes many unique featu.