Cadillac CT4-V Blackwing 3.6L TT JB4 CANbus ECU tuning box

The JB4 CANbus piggyback ECU delivers up to 100hp on the CT4-V Blackwing’s twin-turbo 3.6L - no flash, no VIN lock, full OBDII integration. Plug-and-play in under an hour.

• Preloaded maps for 91/93 octane, E85, race fuel, valet and stock modes
• Boost-by-gear control, real-time logging, fault code read/delete
• Fully removable - zero flash footprint, warranty and resale friendly
• Works seamlessly with all factory driving modes
• Optional JB4 PRO Bluetooth for live tuning and free firmware updates