Chevrolet, GMC (6.6) Computer Chip Programmer - DiabloSport - 8266-R

The 2020-2023 6.6 L8T GM gas trucks have been locked down since their introduction. Owners of these trucks have been waiting patiently for a tuning solution, and DiabloSport has delivered in a big way! The new 8266-R kit includes our inTune 3 handheld tuner, along with our industry exclusive locksmith device and harnesses required to unlock the ECM in your truck. Once unlocked, the inTune 3 offers up tunes for 87, 91 and 93 octane fuels, as well as 2 transmission tunes to choose from. Beyond the preloaded tunes, we offer a host of user adjustable parameters, like throttle response, speed limit, tire size, and more. We've even added some new features for drivers of these newer trucks, like the ability to recall your last mode setting!
Get power you can feel, with DiabloSport!
Features
ECM unlock included!
Unlock and Tune, at home!
Preloaded tunes for multiple octane levels
Support for 6.6L L8T applications with 6 speed Transmission
Throttle Boost setting for adjustable throttle feel
Adjust speedometer for larger tires (26"-38")
Calibrate speedometer for gear change (3.42-5.13)
Remove speed limiter for increased top speed
Adjust engine rev limiter for increased RPM range (+/- 400 RPM)
Adjust engine idle speed in Park/Neutral and Drive
‘Keep Drive Mode Setting’ allows you to select a drive mode and it will remember that mode next time you start the truck!
Adjust fueling at WOT in multiple RPM ranges
Calibrate spark timing at WOT across multiple RPM ranges
Front/Rear TPMS threshold adjustment
Air Filter Monitor system control
Transmissions adaptive relearn