Loading...
Skip to content
Pricing
EUR 614
USD 667 / EUR 614 / UAH 31,596
Power gains of up to 60hp and 80tq to the wheels on a stock vehicle, and up to 100hp to the wheels on CT4-V Blackwing models. From Luxury to Lethal. This plug-and-play tuner connects to easy-to-access sensors in the engine bay and works with your factory ECU to optimize boost, timing, and fueling for maximum performance and reduced turbo lag.
Installation is very discreet. Unlike flash remaps that cannot be fully removed, the JB4 leaves no trace and the vehicle is never aware it is producing higher boost or power levels. Fuel economy during normal driving is unchanged and it remains compatible with all driving modes.
Unlike less advanced tuning systems, the JB4 features full CANbus integration, allowing it to read critical engine data directly from the ECU for real-time tuning adjustments. This includes pedal position, throttle position, timing advance, fuel trims, air/fuel ratio, knock feedback, gear, and more.
Systems without CANbus cannot monitor or incorporate this data, limiting both performance and safety. With CANbus, the JB4 delivers large power gains with smooth and precise power delivery. JB4 includes multiple maps for 91 octane, 93 octane, stock mode, VALET mode, E85 mixtures, and unleaded race fuel.
It also offers boost-by-gear control for improved launches, the ability to read and delete fault codes, and extensive customization. The JB4 is made in the USA and backed by a 5-year warranty. Optional JB4 Harness Extensions: These plug-and-play connectors simplify installation and removal by bypassing the difficult-to-reach lower MAP sensor.
Sold in pairs. Optional Boost Control Module (BCM): Available for JB4-tuned 2022+ CT4-V Blackwing 3.6L Twin Turbo V6 engines. Wirelessly Connect to your JB4: Add the all-new JB4 PRO smartphone connection to wirelessly connect the JB4 tuner to your Bluetooth-compatible iOS or Android device.
Record and analyze vehicle data, change maps on the fly, and update firmware as we release free updates with new features and more powerful tuning maps. The adapter fits inside the JB4 enclosure for enhanced weather protection and a cleaner installation.
The JB4PRO free app offers an intuitive interface, help features, and advanced log analysis tools to estimate performance and identify tuning issues. JB4 Power Gains,
