Unlock serious, usable power from your 2018 onwards Jeep Wrangler 2.0L Turbo or Cherokee 2.0L Turbo with the JB4 plug and play tuner. This intelligent piggyback ECU upgrade delivers gains of up to 40hp at the wheels on a stock vehicle on pump fuel, with even more potential on higher octane or with supporting bolt-on parts. Supplied and supported by Nforcd in the UK, the JB4 delivers smooth, factory-like driveability with the performance you want from an aftermarket tune.
- Up to 40hp at the wheels on a standard vehicle on pump fuel, around 55hp at the crank
- On-the-fly in-dash map switching between stock and performance maps
- Preloaded with custom JB4 software and up to 8 maps for different fuels and modification levels
- Ethanol E85 compatible tuning maps
- Boost by gear in 1st, 2nd and 3rd for improved traction
- Progressive water methanol injection support
- Built-in data logging plus read and clear fault codes
- CANbus OBDII integration for advanced control, safety and smooth operation
- Improves 0 to 60 and quarter mile performance
- Quick Plug & Play installation and easy removal with no ECU unlock required
- Runs as smoothly as stock and works with all driving modes
- Fuel economy unchanged during normal driving
- Not VIN locked and can be removed without a trace or resold later
- Rugged billet aluminium enclosure
- Designed and assembled in the USA with a 5 year warranty
- 91 octane fuel or better required for performance gains
Optional Bluetooth app control
Add the optional JB4 PRO Bluetooth smartphone connection to wirelessly link the tuner to your iOS or Android device. Use the free JB4PRO app to view and record up to 40 live parameters, switch maps, analyse logs and update firmware as new releases become available. The compact adapter fits inside the JB4 enclosure for a neat, weather-protected setup.
Vehicle fitment
- 2018 onwards Jeep Wrangler 2.0L Turbo
- 2018 onwards Jeep Cherokee 2.0L Turbo
Nforcd knows this product well and it has been a popular upgrade with our customers seeking a powerful yet reversible tuning solution. Order today with confidence. Professional fitting is available through Nforcd in Warwickshire. To arrange fitting or request a quote, email Sales@nforcd.com.