S55 JB4 Tuner for BMW F80 M3, F82 M4, F87 M2 Competiton - Burger Tuning Type:Normal 3' wiring harness

3' wiring harness

3' F30 LCI   (09/2014+

While it's not the only tuning system that operates this way the JB4 separates itself from the competition with much more advanced connection points and processing including CANbus

0L Hatchback models

or any stock-fit intercooler upgrade

S55 JB4 Tuner for BMW F80 M3, F82 M4, F87 M2 Competiton - Burger Tuning Type:Normal 3' wiring harnessGains are up to 80whp 100tq on pump gas and up to 120whp 140wtq on higher octane or E85 mixtures without the risks of flashing! The ultimate tuner for your S55 powered vehicle, the JB4 allows you to go from factory stock to full race, and everywhere in between with the push of a button on your steering wheel or phone. The JB4 installs and removes easily and includes many unique features not found in any other tune, including user adjustable 1st and