5/6/X Series JB4 Performance Tune

The Burger Motorsports 5/6/X Series JB4 Performance Tune is a plug-and-play device engineered to enhance the performance of turbocharged BMW vehicles. It installs between the vehicle's sensors and the DME/ECU, manipulating performance parameters to deliver noticeable power and torque gains without permanently altering the factory computer. This method ensures your DME is unaware of the tune, maintaining factory safety systems and avoiding the need to unlock or flag the ECU. This JB4 tuner is designed for simple plug-and-play installation and can be removed in minutes without special tools. It features a billet aluminum enclosure and is made in the USA, backed by a 5-year warranty. Power gains can be substantial, with up to 60hp and 60tq at the wheels (80hp crank) on a stock vehicle, and up to 100hp to the wheels (120hp crank) on a fully modified car. The JB4 offers multiple tuning maps for different fuel types, supports E85 ethanol blends, and can read and delete fault codes. It also includes features such as boost by gear control for improved traction, in-dash boost gauge functionality, and exhaust flap control on supported vehicles. For advanced users, the JB4 can connect wirelessly to a smartphone via the JB4 PRO app, allowing for data logging, performance analysis, map changes, and firmware updates. The app provides an intuitive interface with advanced log analysis tools to help estimate vehicle performance. This tuner is not VIN-locked and can be easily transferred to another vehicle or resold. Fitment is specific to F Chassis N55 BMW models, including various iterations of the 1 Series, 2 Series, 3 Series, 4 Series, 5 Series, 6 Series, 7 Series, and X Series vehicles from 2011 through 2018. Specific fitment details and the distinction between JB4_PWG and JB4_EWG models are provided, with guidance on checking wastegate type via reference photos prior to ordering.