Description
The Burger Tuning JB4 Tuner for the BMW S58 engine delivers massive performance gains—80whp/100wtq on pump gas and up to 150whp/175wtq on higher octane or E85 mixtures—without flashing your ECU.
Designed for the 2023+ G87 M2, 2021+ G80 M3, and 2021+ G82/G83 M4, the JB4 integrates with your factory ECU via CANbus OBDII for advanced tuning strategies, real-time safety monitoring, and seamless drivability. It features boost by gear, ethanol fuel support, built-in diagnostic tools, and fully reversible plug-and-play installation with no cutting or splicing.
Easily switch maps, log data, and update firmware with the optional JB4 Mobile or JB4PRO Bluetooth adapters. Whether you’re looking for a subtle performance bump or full race settings, the JB4 takes your S58-powered BMW to the next level.
Features & Benefits
- Gains up to 80whp/100wtq on pump gas and 150whp/175wtq on E85 or race fuel
- Improves 0–60mph and 1/4-mile times
- Preloaded with up to 8 maps for various fuels and mods
- Ethanol (E85) compatible tuning maps
- Boost by gear control for optimal traction
- View/log up to 40 engine parameters in real time
- Read and delete fault codes
- Quick plug-and-play install – no permanent modifications
- CANbus OBDII integration for advanced tuning features
- Smooth, OEM-like drivability in all driving modes
- Fuel economy unchanged during normal driving
- Not VIN-locked – transferable and removable without a trace
- Rugged billet aluminum enclosure
- Designed and assembled in the USA
- Free USA shipping & 5-year warranty
Vehicle Fitment
BMW M2
-
2023+ G87 M2 (S58)
BMW M3
- 2021+ G80 M3
- 2021+ G80 M3 Competition
BMW M4
- 2021+ G82 M4
- 2021+ G82 M4 Competition
- 2023+ G82 M4 CSL
- 2022+ G83 M4 Convertible
What is a JB4?
The JB4 is a sophisticated plug-and-play tuning system for turbocharged BMWs, adjusting boost, fueling, and timing for maximum performance while retaining factory reliability. With CANbus integration, ethanol support, and advanced logging capabilities, it outperforms basic piggyback tuners. Installation is fully reversible, and ongoing free firmware updates keep your tune at peak performance.
