BMW B38/ B46/ B48/ B58 JB4 Tuner by Burger Motorsports (Gen1 & Gen2)

Power gains of up to 120whp and 120wtq. on a stock vehicle without the risks of flashing! The JB4 is the most advanced and feature-rich tuning system available for BMW's B58, B38, B46, and B48 engines, offering significant power gains, seamless integration, and unparalleled ease of use. With its plug-and-play design and innovative features, the JB4 transforms your driving experience without requiring additional modifications. For B58 Engines: Power Gains: Up to 120hp to the wheels (140hp crank) on a completely stock engine with pump gas. Gains are even higher with bolt-ons, E85 fuel mixtures, or larger turbos. Key Features: Simple plug-and-play installation for quick setup and removal. In-dash map switching: Seamlessly toggle between factory and performance maps. Optional in-dash gauge displays for real-time metrics like boost. Boost limiting by gear to enhance traction in lower gears. Support for progressive water/methanol injection. Built-in data logging and code reading cap