Unlock serious performance from your 2020 onwards Cadillac with the JB4 plug-and-play tuning box. This advanced piggyback ECU upgrade works alongside the factory ECU to optimise boost, timing and fueling for sharper throttle response, reduced turbo lag and impressive real-world gains. On a stock vehicle the JB4 can deliver up to 60hp and 80tq to the wheels, with CT4-V Blackwing models seeing up to 100hp to the wheels. Nforcd supplies the JB4 in the UK and knows this upgrade inside out, making it a popular choice for Cadillac owners seeking a safe, removable alternative to a flash remap.
- Power gains up to 60hp and 80tq to the wheels on a stock vehicle, and up to 100hp on CT4-V Blackwing
- Plug-and-play installation using easy-to-access engine bay sensors
- Full CANbus OBDII integration for real-time tuning using pedal position, throttle, timing, fuel trims, AFR, knock feedback, gear and more
- Preloaded with multiple maps for 91 octane, 93 octane, E85 mixtures, unleaded race fuel, stock mode and VALET mode
- Boost-by-gear control in 1st, 2nd and 3rd to help manage traction
- Read and delete fault codes, with extensive customisation available
- Optional JB4 PRO Bluetooth connection for iOS and Android to log data, switch maps on the fly and install free firmware updates
- Leaves no flash footprint and is fully removable for servicing or resale
- Smooth, factory-like drivability with no change to fuel economy during normal driving
- Compatible with all driving modes
- Not VIN locked and supplied in a rugged billet aluminium enclosure
- Designed and assembled in the USA, backed by a 5-year warranty
- 91 octane fuel or higher recommended for best performance
Optional accessories available separately:
- JB4 harness extensions to bypass the hard-to-reach lower MAP sensor and simplify install and removal
- Boost Control Module for JB4-tuned 2022+ CT4-V Blackwing 3.6L twin turbo V6 engines
Vehicle fitment:
- 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
The JB4 is a proven aftermarket tuning solution for turbocharged Cadillacs, offering more functionality than typical piggyback units thanks to its CANbus integration, data logging and map support. Order your JB4 from Nforcd with confidence. Professional fitting is available at Nforcd in Warwickshire. To request a fitting quote, email Sales@nforcd.com.