JB4 Performance Tuner

The Burger Motorsports JB4 is a plug-and-play performance tuner designed to safely increase turbocharger output for compatible Mercedes-Benz models. It connects to four easily accessible plugs on the engine and safely increases turbocharger boost pressure by 3-6psi, leading to significant power and torque gains. The tuner rescale timing and fueling for the increased boost. Installation is a quick plug-and-play process, and the unit is completely reversible in seconds, meaning no permanent modifications are made to your vehicle. The JB4 tuner features CAN-bus connectivity for advanced tuning capabilities, allowing it to integrate more deeply with your vehicle's systems compared to simpler tuners. It is compatible with both all-wheel drive and rear-wheel drive models. Power gains typically range from 30-60 wheel horsepower on pump gas, with even higher gains possible when using racing fuel or E85 mixtures. The JB4 offers multiple tuning maps for different fuel types, can read and delete fault codes, and displays and logs up to 40 engine parameters. It also features boost-by-gear control for improved traction and can control exhaust flap operation on supported vehicles. This product is not for sale or use in the state of California on any pollution-controlled vehicle. Specific fitment details should always be confirmed with the manufacturer's provided vehicle compatibility lists.