Description
The Burger Tuning N20/N26 JB4 BMW Performance Tuner delivers instant power upgrades with a simple plug-and-play installation. Gain up to 50 horsepower and 60 lb-ft torque to the wheels on a completely stock BMW N20 or N26 turbocharged vehicle, with potential gains up to 100hp on heavily modified cars. No ECU flash is required, and it is compatible with locked ECUs.
Vehicle Fitment:
This JB4 tuner fits the following BMW models equipped with N20 or N26 2.0L turbocharged four-cylinder engines:
- 2 Series (F22, F23) 2014–2016: 220i, 228i (Electronic Wastegate version)
- 3 Series (F30, F31) 2012–2016: 320i, 328i
- 4 Series (F32, F33) 2014–2016: 420i, 428i (Electronic Wastegate version)
- 5 Series (F10) 2011–2016: 520i, 528i
- X Series (F25) 2011–2017: X3 xDrive20i, xDrive28i
-
E Chassis X1 and Z4
- E83 X1 28i including xDrive 2013–2015 (select E Series X1 & Z4 firmware)
- E89 Z4 28i 2013–2016 (select E Series X1 & Z4 firmware)
Key Features and Benefits:
- Delivers up to 50hp and 60 lb-ft torque gains at the wheels on stock vehicles
- Improves acceleration and 1/4 mile times noticeably
- Preloaded with up to 8 custom JB4 maps optimized for various fuel types, including E85 ethanol
- Plug & play installation with a robust billet aluminum enclosure for durability
- Gear-dependent boost control for enhanced traction and launch control
- Built-in diagnostic code reading and deleting capability
- Control exhaust flap operation via your BC button for select models
- CANbus OBDII integration for advanced tuning and vehicle communication
- Wireless Bluetooth 4.0 compatibility with JB4 Mobile and JB4PRO adapters for smartphone or laptop tuning, logging, and firmware updates
- Real-time viewing and recording of up to 40 engine parameters via the JB4 app
- Runs smoothly with factory-like drivability, compatible with all BMW driving modes
- No change in fuel economy during normal driving
- Requires 91 octane fuel or better for maximum performance gains
- Not VIN locked: fully removable and transferable between vehicles or resellable without trace
- Made and assembled in the USA with a 5-year extended warranty
- Free USA shipping included
Additional Notes:
- The JB4 requires selection of the correct harness version depending on your model and wastegate type (Pneumatic or Electronic).
- Some F10 and X chassis models need a JB4 Mobile adapter or BMS Data cable to enable in-dash control functions.
- The X1 & Z4 N20 JB4 uses unique firmware and a different CANbus mounting location than F-series N20 JB4s; be sure to select the correct version.
What is a JB4?
The JB4 is a cutting-edge plug-and-play performance tuner designed for turbocharged BMW vehicles. It installs between your car’s sensors and its ECU (DME), enhancing power output by controlling boost, fuel, and spark without permanently altering your ECU software. Unlike flash tunes, the JB4 is fully reversible, not VIN locked, and can be easily removed or transferred. With advanced CANbus integration, Bluetooth connectivity, ongoing free firmware updates, and sophisticated tuning features, the JB4 remains the gold standard in turbocharged BMW tuning for over a decade.
