Power gains of up to 104hp to the wheels on a stock RAM 1500 3.0L! The JB4 is the most advanced and highly featured tuning system for your Ram 1500 with the new 3.0L I6 Hurricane Twin Turbo engine. Power gains are up to 104 wheel horsepower on a completely stock RAM 1500 on pump gas.

Gains with bolt-on parts, higher octane, and larger turbos are even higher. Compatible with both SO and HO motors! Now includes the JB4PRO adapter and free app built in!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. Wirelessly Connect to your JB4: Includes our all-new JB4PRO smartphone connection to wirelessly connect the JB4 via Bluetooth to your iOS or Android device.

The JB4PRO Free app allows you to change maps, record and analyze vehicle and tuning data, and update JB4 firmware as we release 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 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. RAM

Vehicle Fitment

Compatible with both SO and HO Hurricane motorsRAM
2025+ RAM 1500 WARLOCK 3.0L I6 Hurricane SO Twin Turbo
2025+ RAM 1500 LARAME® 3.0L I6 Hurricane SO Twin Turbo
2025+ RAM 1500 REBEL® 3.0L I6 Hurricane SO Twin Turbo
2025+ RAM 1500 BIG HORN® 3.0L I6 Hurricane Twin Turbo
2025+ RAM 1500 RHO 3.0L I6 Hurricane HO Twin Turbo
2025+ RAM 1500 LIMITED 3.0L I6 Hurricane HO Twin Turbo
2025+ RAM 1500 TUNGSTEN 3.0L I6 Hurricane HO Twin Turbo

JB4 Tuner for 2025+ RAM 1500 3.0L I6 Hurricane Twin Turbo

Vehicle Fitment