4/6/2024 0 Comments N55 jb4 firmwareSimply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. Remember the JB4 does not require any additional modifications or previous stages. Including the ability to enable/disable the tuning from the drivers seat, gear dependent boost control to help with traction, ethanol and racing fuel support, built in diagnostic code reading/deleting, free firmware updates, and much more. How about up to 60hp to the wheels (80hp crank) on a completely stock car or up to 100hp to the wheels (120hp crank) on a fully modified car? The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune. Ready to take your F Chassis BMW N55 turbo to the next level?
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