JB4 Performance Tuner for N54

The Burger Motorsports N54 JB4 is a plug-and-play performance tuner engineered to significantly enhance the power output of BMW's twin-turbocharged N54 engines. It provides an instant horsepower boost, with claims of up to 100 crank horsepower and 80 wheel horsepower on a stock vehicle, and can support up to 350 wheel horsepower on heavily modified cars with larger turbochargers. Installation is designed to be straightforward using a simple plug-and-play harness, and the JB4 is compatible with all N54 ECU versions and transmission types, including DCT. The tuner offers a variety of features for customization and control. These include multiple performance maps that can be changed "on the fly" from the driver's seat, a 100% stock bypass map for returning to factory settings, and a valet mode. Further enhancing its versatility, the N54 JB4 supports advanced fueling options such as ethanol fuel (E85) and progressive water/methanol injection. It also includes features like an automatic tuning map that adapts to environmental and vehicle conditions, a racing fuel map, and an RPM-adjustable map for fine-tuning. Optional enhancements available include in-dash gauges for boost and other parameters, a programmable shift light, on-the-fly adjustable torque limiting for improved launches, and for manual transmission cars, an optional 2-step rev limiter and no-lift shifting. The JB4 is designed to be the first and only modification needed to unlock a new level of performance, and it scales with further modifications. Its applications cover a range of BMW models including the 1 Series (E82/E88 135i, E82 1M), 3 Series (E90/E91/E92/E93 335i/xi, E92 335is), 5 Series (E60/E61 535i/xi), X6 (E71 xDrive35i), and Z4 (E89 sDrive35i).