Description
Take your F chassis N55 BMW to the next level with the Burger Tuning JB4, offering up to 80 crank HP (60whp) on a completely stock vehicle and up to 120 crank HP (100whp) on fully modified cars. This plug & play tuner installs quickly with no ECU flashing, making it a safe, reversible upgrade.
The JB4 includes advanced features like gear-dependent boost control, autotuning for E85 fuel blends, in-dash boost gauge support (where applicable), exhaust flap control, and built-in fault code reading/deleting. Compatible with locked ECUs and requiring no prior modifications, the JB4 is perfect for both daily drivers and hardcore enthusiasts.
Wireless smartphone connectivity with JB4 Mobile or JB4PRO adapters allows real-time data monitoring, map switching, and free firmware updates. Manufactured in the USA and backed by a 5-year warranty, the JB4 remains the gold standard for BMW turbocharged tuning.
Key Features & Benefits
- Up to 60whp and 60tq gains on stock vehicles (80 crank hp)
- Improves 0-60 mph acceleration and 1/4 mile times
- Preloaded with up to 8 custom JB4 tuning maps for various fuels and mods
- Ethanol (E85) compatible tuning included
- Reads and clears fault codes easily
- Real-time monitoring and logging of 40+ engine parameters via JB4 app
- Boost by gear control for 1st, 2nd, and 3rd gears
- Exhaust flap control on supported vehicles
- Compatible with JB4 Mobile and JB4PRO smartphone adapters
- Quick plug & play installation — no ECU flashing or wiring splicing
- CANbus OBDII integration for advanced tuning and diagnostics
- Smooth drivability identical to stock
- Supports all driving modes
- No fuel economy penalty during normal driving
- Requires 91 octane or higher for optimal performance
- Not VIN locked, fully removable and transferable
- Rugged billet aluminum enclosure for durability
- Designed and assembled in the USA
- Free USA shipping
- 5-year warranty
Vehicle Fitment
BMW 1 Series
- 2012-2013 N55 F20/F21 M135i (JB4_PWG)
- 2014-2015 N55 F20/F21 M135i (JB4_EWG)
BMW 2 Series
- 2014-2015 N55 F22/F23 M235i (JB4_EWG)
- 2016-2017 N55 F87 M2 (JB4_EWG)
BMW 3 Series
- 2012-2013 N55 F30/F31 335i incl. xDrive, Active Hybrid, xDrive GT (JB4_PWG)
- 2014-2015 N55 F30/F31 335i incl. xDrive, Active Hybrid, xDrive GT (JB4_EWG)
BMW 4 Series
-
2014-2016 F32/F33/F36 435i incl. xDrive, Gran Coupe (JB4_EWG)
BMW 5 Series
- 2011 N55 F10/F11/F07 535i incl. xDrive, ActiveHybrid 5, xDrive GT (JB4_F10_A)
- 2012-2013 N55 F10/F11/F07 535i/ix, ActiveHybrid 5, 535i/ix GT (JB4_F10_A or JB4_PWG)
- 2014-2016 N55 F10/F11/F07 535i/ix, ActiveHybrid 5, 535i/ix GT (JB4_EWG)
BMW 6 Series
- 2011 N55 F06/F12/F13 640i incl. xDrive, Gran Coupe (JB4_F10_A)
- 2012-2013 N55 F06/F12/F13 640i incl. xDrive, Gran Coupe (JB4_PWG or JB4_F10_A)
- 2014-2016 N55 F06/F12/F13 640i incl. xDrive, Gran Coupe (JB4_EWG)
BMW 7 Series
-
2013-2018 N55 F01/F02 740i incl. xDrive (JB4_EWG)
BMW X Series
- 2011-2013 N55 F25 X3 incl. xDrive (JB4_PWG)
- 2014-2017 N55 F25 X3 incl. xDrive (JB4_EWG)
- 2014-2018 N55 F15 X5 / F16 X6 incl. xDrive (JB4_EWG)
- 2014-2018 N55 X4 M40i incl. xDrive (JB4_EWG)
Wastegate Types:
PWG = Pneumatic Wastegate
EWG = Electronic Wastegate
(Use sensor reference photos to confirm your vehicle's wastegate type)
What is a JB4?
The JB4 is a plug & play performance tuner that intercepts signals between your car’s sensors and ECU to safely increase boost, optimize fueling, and timing for more power and torque. Featuring CANbus integration, Bluetooth smartphone control, and frequent free firmware updates, JB4 offers unmatched flexibility, safety, and ease-of-use. It’s not VIN locked, easily removable, and has been the industry standard for turbocharged BMW tuning for over a decade.
