S58 JB4 Tuner for 2021+ BMW G80 M3, G82 G83 M4, & 2023+ G87 M2 | R 18400 – Check Prices Buy Online

S58 JB4 Tuner for 2021+ BMW G80 M3, G82 G83 M4, & 2023+ G87 M2

The S58 JB4 Tuner offers significant power gains on pump gas, higher octane, or E85 mixtures. It is designed for S58 powered BMWs like the G87 M2, G80 M3, and G82 M4, providing various tuning levels from stock to race. The JB4 features user-adjustable boost limiting, smartphone integration, wastegate control, ethanol support, and diagnostic tools. Installation is user-friendly with no wire cutting. Wireless connectivity allows data recording, map changes, and firmware updates. Other features include multiple tuning maps, fault code reading, real-time gauge monitoring, and boost control by gear. The JB4 offers performance, functionality, and safety enhancements over typical chip tunes, with easy plug-and-play installation and compatibility with driving modes. It requires 91 octane fuel or better for optimal performance, is not VIN locked, and includes a 5-year warranty. The JB4 fits various S58 BMW models, and it can be easily swapped between cars. Overall, the JB4 is a top-notch plug & play tuning solution for turbocharged vehicles.