JB4 Engine Tuner

The Burger Motorsports F Series JB+ tuner offers a straightforward and rapid method for increasing your BMW's power output. This device is engineered to provide significant performance gains, offering up to 25 wheel horsepower and 35 lb-ft of torque for N20 engines, and up to 35 wheel horsepower and 45 lb-ft of torque for N55 engines. Crucially, it does not negatively impact fuel economy during normal operation. It is important to note that this tuner is intended for off-road racing use only. It is not for sale or use in the state of California on any pollution-controlled vehicle, as per the California Air Resources Board regulations.