Description
Experience unmatched power gains of up to 130WHP on a completely stock BMW GEN3 B48 or B58 engine—without any flashing required. The Burger Tuning JB4 is the most advanced, plug-and-play tuning system designed specifically for BMW’s latest B48 and B58 GEN3 engines.
This high-performance tuner processes ultra-fast SENT digital signals in real time with zero latency, providing smooth, stock-like drivability while unleashing raw performance potential. With the JB4, you can expect gains of up to 100whp (125hp at the crank) on 93 octane fuel—and even higher with ethanol blends.
Key Features & Benefits:
- Up to 130 horsepower to the wheels on a stock vehicle
- Plug-and-play installation with no required modifications
- On-the-fly map switching between factory and performance settings via smartphone
- Boost-by-gear control to optimize traction in 1st, 2nd, and 3rd gear
- Ethanol (E85) compatible tuning maps
- Built-in data logging, code reading/clearing, and water/methanol injection support
- CANbus OBDII integration for advanced functionality
- No VIN lock, fully removable and transferable
- Fully compatible with all driving modes
- Retains fuel economy under normal driving conditions
- Built-in safety systems for engine protection
- Includes a durable billet aluminum JB4 enclosure
- Designed, assembled, and supported in the USA
- 5-year warranty
For those wanting additional control, the optional Bluetooth adapter lets you wirelessly connect to the JB4 using your iOS or Android device. Through the JB4 Mobile or JB4PRO apps, you can log runs, update firmware, analyze performance, and more.
Vehicle Fitment
This JB4 Tuner is compatible with the following BMW models equipped with GEN3 B48 or B58 engines:
BMW 2 Series (2023+)
-
F44 228i xDrive Gran Coupe
BMW 3 Series (2025+)
- G20 / G21 M340i (including xDrive)
- G20 / G21 320i (B48 GEN3)
BMW 4 Series (2025+)
-
G22 / G23 / G26 M440i (including Gran Coupe and xDrive)
BMW 5 Series (2024+)
- G60 / G61 540i (including xDrive)
- G60 / G61 530i and 530e (including xDrive)
BMW 7 Series (2023+)
-
G70 740i (B58 GEN3)
BMW X Series
- 2023+ U11 / U12 X1 28i and xDrive28i (B48 GEN3)
- 2025+ G45 X3 M50 xDrive (B58 GEN3)
- 2024+ G05 X5 M40i and xDrive40i (B58 GEN3)
- 2024+ G06 X6 xDrive40i (B58 GEN3)
- 2022+ G07 X7 xDrive40i (B58 GEN3)
Note: This unit does not fit earlier B48/B58 engine generations due to different connectors. Ensure your vehicle is equipped with a GEN3 engine before purchase.
