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Jb4 BMW BMW 335 Performance Jb4 135 335 intakes
MIni Performance Tuner Chip
MINI B48 JB4 BETA
BMW JB4 M3 M4 BMW Performance tuner tune chip flash ecu raise boost
Ready to take your MINI B38/B48 turbo to the next level?

Jb4 Mini Cooper raise boost

How about up to 40hp to the wheels (50hp crank) on a completely stock B48 on pump gas? The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune. Including on the fly in dash map switching between factory and various performance maps, optional in dash gauge displays for boost, boost limiting by gear for improved traction in lower gears, E85 fuel support, progressive water/methanol support, built in data logging, built in code reading, and much more.

Remember the JB4 does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. The JB4 also does not require any user setup or customization but for more advanced enthusiasts the BMS DATA cable allows you to connect via a laptop for data logging and free software updates.

The latest B38/B48 map guide, feature set, firmware updates, and directions are posted here.

MINI B38/B46/B48 JB4 BETA Applications:

• 2014+ MINI S B38/B46/B48

OBDII M4 M3 Tuner
B38 B48 Mini cooper 3 cyl engine
BMW JB4 M3 M4 BMW Performance tuner tune chip flash ecu raise boost
MINI B38/B46/B48 JB4 BETA


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