The JB4 is the most advanced and highly featured tuning system for your Dodge Hornet with the 2.0L I4 Turbo engine. Peak power gains are up to 30 wheel horsepower and 80 wheel torque on a completely stock 2.0L Hornet on pump gas, with gains as high as 65hp to the wheels under the curve. Potential gains with bolt-on parts, higher octane, or E85 fuel mixtures are even higher!

No ECU flash needed and compatible with locked 🔒 ECUs

The JB4 features a simple plug and play installation harness for easy installation & removal and includes many features not found with any other tune. Including on-the-fly in dash map switching between factory and various performance maps, boost limiting by gear for improved traction in lower gears, progressive water/methanol support, built-in data logging, built-in code reading, and much more.

6Wirelessly Connect to your JB4: Grab our all-new JB4 PRO smartphone connection to wirelessly connect the JB4 BMW tuner to your Bluetooth 4.0 compatible iOS or Android device. This option allows you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. Our new adapter fits fully inside the JB4 enclosure for enhanced weather protection and a more streamlined look. The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns. 

JB4 FEATURES AND BENEFITS

• Power gains of up to 30hp and 80 tq peak to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4PRO tuning software and up to 8 maps for various fuel and modification levels
• Ethanol (E85) compatible tuning maps up to 30% mixtures
• Able to read/delete fault codes
• View and record up to 40 gauges/engine parameters in real-time with the JB4 app.
• Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4PRO app for a perfect launch
• Compatible with the JB4PRO app for logging, tuning changes, and adjustment
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• CANbus OBDII integration offering unrivaled tuning features and performance
• Improved performance over non-integrated chip tunes
• Runs as smoothly as stock. This is how your vehicle should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• 91 octane fuel or better required for performance gains
• Not VIN locked and can be removed without a trace and resold down the road
• Includes the rugged JB4 billet aluminum enclosure for protection
• Made in the USA
• 5 year warranty

 

Vehicle Fitment

Dodge
• 2023+ Dodge Hornet 1.3L I4 Turbo PHEV R/T, & R/T Plus
• 2023+ Dodge Hornet 2.0L I4 Turbo Hurricane 4 GT, GT Plus