DiabloSport 8266-R - inTune 3 for 2020-2023 6.6 L8T Unlock and Tune Kit
DISCLAIMER: This Item Is Special Ordered, which may have cancellation or return restrictions. Please see our terms and conditions for more information.
Programmers and Tuners have a strict return policy. Once the seal is broken, they can not be returned. This is because they may be locked and unusable. Make sure it will work on your car prior to ordering.
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Description
Description
DiabloSport 8266-R - inTune 3 for 2020-2023 6.6 L8T Unlock and Tune Kit
inTune 3 for 2020-2023 6.6 L8T Unlock and Tune Kit
Unlock AND Tune your 2020-2023 6.6L L8T powered Silverado or Sierra, in your driveway with inTune 3!
The DiabloSport inTune i3 8266-R Kit is the breakthrough tuning solution for 2020–2023 GM trucks equipped with the 6.6L L8T gas engine. These trucks shipped with locked PCMs that blocked tuning—until now. This complete kit includes the powerful inTune i3 handheld tuner, along with DiabloSport’s exclusive locksmith device and harnesses required to unlock your ECM.
- 2020-2023 Silverado 2500/3500 6.6 L8T
- 2020-2023 Sierra 2500/3500 6.6 L8T
- 28 rwhp over stock on premium fuel
- 50 rwtq over stock on premium fuel
- Tunes for 87 octane, and premium fuel provided
- 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





