BMS JB4 N54 Tuner

Upgrade the performance of your N54 powered BMW with a Burger Motorsports JB4 Tuner! Looking to bring those horsepower numbers up on your N54? Well then a JB4 is right for you! JB4 adds up to 80hp to the wheels (100hp crank) on a completely stock car, and up to 160hp to the wheels on factory turbos, or even further, up to 350hp to the wheels on a fully modified car with larger turbo(s)! The JB4 includes a simple plug and play installation harness and is compatible with all ECU versions and transmission types. It's everything you need to take your N54 powered vehicle from mild to wild. In addition to several performance maps which can be selected "on the fly" right from the driver's seat the JB4 includes a 100% stock bypass map, a valet mode, ethanol fuel (E85) support, progressive water/methanol injection support, racing fuel map, an auto tuning map that adjusts the JB4 mapping to your current climate, octane, vehicle condition, and modifications continuously, and for those interested