B58 Tuner

The JB4 B58 tuner from Burger Motorsports is a sophisticated plug-and-play performance tuning system engineered for BMW's B58 turbocharged engines, covering both GEN1 and GEN2 variants. It offers gains of up to 120 horsepower and 120 lb-ft of torque at the wheels on a stock B58 engine using pump gas, with potential for even greater gains with supporting modifications like E85 mixtures or larger turbochargers. The JB4 features a simple plug-and-play wiring harness for quick installation and removal, while providing advanced tuning capabilities. Users can switch between multiple maps on-the-fly, including stock (Map0), performance maps with varying boost levels (Map1-3), absolute target maps (Map4-5), custom tuning (Map6), and water/methanol integration (Map7), or a valet map (Map8). It also includes features like boost-by-gear control for improved traction, progressive water/methanol integration, built-in data logging, fault code reading/clearing, and direct electronic wastegate control. Included with the JB4 is the JB4PRO adapter and a free smartphone app, allowing wireless connection to iOS or Android devices. This enables real-time vehicle data analysis, map switching, and firmware updates. The app offers an intuitive interface with help buttons and advanced log analysis tools. The JB4 is CARB approved under Executive Order D-744-4 for numerous 2016-2018 BMW applications. Compatibility extends to GEN1 and GEN2 B58 engines, with specific fitment listed for various BMW models including the 1 Series M140i, 2 Series M240i, 3 Series M340i, 4 Series M440i, 5 Series 540i, 6 Series 640i, 7 Series 740i, 8 Series 840i, X3 M40i, X4 M40i, X5 40i, X6 40i, X7 40i, and Z4 M40i, covering model years from 2016 to 2024 depending on the specific vehicle. The unit includes a billet aluminum enclosure, a 5-year warranty, and is designed and assembled in the USA.