Ford Raptor R Tuner Tune Flash Performance Software Dyno Horsepower Specs Lease Price

JB4 for 2020+ Cadillac

$529.00

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. Available here.

Optional Boost Control Module (BCM): Available for JB4-tuned 2022+ CT4-V Blackwing 3.6L Twin Turbo V6 engines. Available here.

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. For more info on how to use the JB4PRO free app, click here.

JB4 Power Gains, Features & Benefits

Power gains up to 60hp and 80tq to the wheels on a stock vehicle, and up to 100hp on CT4-V Blackwing
Improves 0-60 times and 1/4 mile performance
Preloaded with custom Cadillac JB4 tuning software and up to 8 maps for different fuels and modification levels
E85 compatible tuning maps
Ability to read and delete fault codes
View and record up to 40 engine parameters in real time using the JB4 app
Boost-by-gear control in 1st, 2nd, and 3rd for optimal traction
Compatible with the free JB4PRO app for logging and tuning adjustments
Quick plug-and-play installation
Advanced CANbus OBDII integration for unmatched performance and safety
Smooth factory-like drivability
Compatible with all driving modes
No change to fuel economy during normal driving
91 octane fuel or higher recommended for best performance
Not VIN locked and fully removable and resellable
Includes rugged billet aluminum JB4 enclosure
Designed and assembled in the USA
5-year warranty

JB4 Vehicle Fitment

Available for Luxury, Premium Luxury, Sport, V-Series models, and CT4-V Blackwing.

Cadillac
• 2020+ Cadillac CT4 2.0L Turbo 4-cylinder
• 2020+ Cadillac XT5 2.0L Turbo 4-cylinder
• 2020+ Cadillac CT4-V 2.7L Dual Volute Turbocharged 4-cylinder
• 2020+ Cadillac CT4-V Blackwing 3.6L Twin Turbo V6
• 2020+ Cadillac CT5 2.0L Twin-scroll Turbocharged 4-cylinder
• 2020+ Cadillac CT5-V 3.0L Twin Turbo V6
• 2020+ Cadillac CT5 550T 3.0L Twin Turbo V6

What is a JB4?
The JB4 is a plug-and-play performance tune for turbocharged vehicles. It installs between your vehicle’s sensors and ECU to safely increase boost and optimize performance. With advanced CANbus integration, fuel and spark control, Bluetooth connectivity, and ongoing free firmware updates, the JB4 delivers more performance and functionality than traditional piggyback tuners. The JB4 is not VIN-locked, so it can be removed, transferred to another vehicle, or resold later.

Is the JB4 a real tune?
Yes. By tapping into engine sensors and CANbus data in real time, the JB4 can adjust boost, timing, AFR, and fuel trims similar to an ECU reflash, while retaining factory safety systems and avoiding ECU unlocking or flash flags.