The JB4 is the proven, no-compromise piggyback tuner for the GMC Canyon 2.7L Turbo (2023+). It adds up to 85 whp and 120 lb-ft torque on standard hardware - no ECU flashing, no coding, no VIN lock.
Plug-and-play fit; fully removable with zero trace
CANbus integration for real-time boost, timing and fueling control
Preloaded maps for 91/93 octane, E85, race fuel, valet mode and stock settings
Boost-by-gear tuning, live fault code read/delete, full towing mode support
OEM drivability preserved - no impact on fuel economy in normal use
Optional JB4 PRO Bluetooth module adds logging, map switching and firmware updates via free app.
