Description
Transform your 2015-2020 S55-powered BMW M3, M4, or M2 Competition with the Burger Tuning JB4 Tuner — the ultimate plug & play performance upgrade. Offering up to 80whp/100wtq on pump gas and up to 120whp/140wtq on higher octane or E85, the JB4 delivers massive power gains without flashing your ECU.
Installation is simple and fully reversible with no splicing or cutting of factory wiring. The JB4 boasts unique features like user-adjustable boost limits for 1st and 2nd gear, map switching from the dash or smartphone, electronic wastegate control, ethanol fuel compatibility, and advanced CANbus diagnostic tools.
Compatible with locked ECUs and a wide range of factory or aftermarket flash maps, the JB4 is perfect for stock, competition package, or fully custom setups. For turbo systems with aftermarket Tial wastegates, a special JB4_S55_TIAL version is available.
Wireless control via JB4 Mobile or JB4PRO adapters enables real-time tuning, data logging, and firmware updates through Bluetooth-enabled iOS or Android devices.
Key Features & Benefits
- Gains of up to 80whp/100wtq on pump gas and up to 120whp/140wtq on high octane or E85
- Improved 0-60 mph acceleration and 1/4 mile performance
- Preloaded with up to 8 JB4 maps for different fuels and modifications
- Full ethanol (E85) tuning support
- Reads and clears fault codes with ease
- Real-time display and logging of 40+ engine parameters via JB4 app
- Boost control by gear (1st, 2nd, 3rd) for perfect launches
- Electronic wastegate control
- Compatible with JB4 Mobile and JB4PRO smartphone adapters
- Quick plug & play installation with no ECU flashing required
- CANbus OBDII integration for advanced tuning features
- Runs smoothly with factory-like drivability
- Supports all BMW driving modes
- No fuel economy loss during normal driving
- Requires 91 octane or higher for best results
- Not VIN locked — removable and transferable
- Rugged billet aluminum enclosure for durability
- Designed and assembled in the USA
- 5-year warranty
Vehicle Fitment
BMW M2
-
2018-2022 S55 F87 M2 Competition (S55 engine only)
BMW M3
-
2015-2020 S55 F80 M3
BMW M4
-
2015-2020 S55 F82/F83 M4, M4 GTS, M4 CS
What is a JB4?
The JB4 is a plug & play tuner designed for turbocharged vehicles, including the S55 BMW engine. It installs between your vehicle’s sensors and ECU to safely boost performance by controlling boost, fuel, and ignition timing. Featuring advanced CANbus integration, Bluetooth smartphone connectivity, and ongoing free firmware updates, the JB4 offers unmatched flexibility and safety. It is not VIN locked, easily removable, and has been the industry standard for turbocharged BMW tuning for over a decade.
