Description
The Burger Tuning JB4 Tuner for the 2018+ Jeep Wrangler & Jeep Cherokee 2.0L Turbo is the most advanced plug & play tuning system available for your Jeep. Designed for easy installation and removal, the JB4 delivers up to 40 wheel horsepower (55 crank HP) on a completely stock setup running pump gas, with even greater gains possible when combined with bolt-ons, higher octane, or upgraded turbos.
Unlike basic performance chips, the JB4 integrates via CANbus OBDII, allowing it to directly monitor and adjust critical engine parameters like boost, fuel trims, timing, and air/fuel ratios for unmatched safety and drivability. You’ll get on-the-fly map switching, boost-by-gear control, progressive water/methanol injection support, fault code reading/clearing, and built-in data logging.
With the optional JB4 Mobile Adapter (sold separately), you can control maps, view live gauges, and log runs right from your smartphone.
Features & Benefits
- Power gains of up to 40whp on a stock vehicle
- Improves 0–60 mph and 1/4 mile times
- Preloaded with up to 8 custom maps for various fuels and mods
- Ethanol (E85) compatible maps available
- Read and delete fault codes directly from the JB4 app
- Boost-by-gear control for optimized launches
- View and log up to 40 real-time engine parameters
- Quick Plug & Play Installation – no ECU flash required
- CANbus OBDII integration for advanced tuning & safety features
- Runs as smoothly as stock during normal driving
- Compatible with all Jeep driving modes
- Fuel economy unchanged under normal driving conditions
- 91 octane or better recommended for performance gains
- Not VIN locked – remove without a trace and resell later
- Rugged billet aluminum JB4 enclosure included
- Made in the USA with a 5-year warranty
Vehicle Fitment
Jeep
- 2018+ Jeep Wrangler 2.0L Turbo
- 2018+ Jeep Cherokee 2.0L Turbo
What is a JB4?
The JB4 is a next-generation plug & play tuner for turbocharged vehicles. It installs between your Jeep’s sensors and ECU to safely and intelligently increase performance. Unlike less sophisticated tuners, the JB4 uses multiple advanced connection points, real-time CANbus data, and integrated safety systems to deliver smooth, consistent power gains without the risks of a flash tune.
