DiabloSport 7266-R Chevrolet GMC 6.6 Tuner/Programmer

The DiabloSport Predator 2 7266-R Kit is the complete tuning solution for 2020–2023 GM trucks equipped with the 6.6L L8T gas engine. From the factory, these trucks are locked down, but DiabloSport provides everything you need to safely unlock and unleash their true performance.\nThis kit includes the Predator 2 handheld programmer, DiabloSport’s exclusive Locksmith device, and ECM harnesses—eliminating the need to remove your ECM. Once unlocked, the Predator 2 gives you access to dyno-tested performance tunes that deliver up to 28 rear-wheel horsepower and 50 rear-wheel torque gains over stock. The result is stronger acceleration, more pulling power, and a truck that feels more responsive in every situation.\nPreloaded calibrations cover 87, 91, and 93 octane fuels, along with dedicated tunes for the 6-speed automatic transmission. Beyond the included tunes, you can fine-tune parameters like throttle response, tire size calibration, and speed limiter adjustments for a more personalized driving experience.\nFor GM truck owners ready to transform performance, drivability, and towing strength, the Predator 2 7266-R Kit delivers the proven power gains and flexibility you’ve been waiting for.