DiabloSport inTune 3 6.6 L8T Unlock and Tune Kit for Chevrolet and GMC
Part # 8266-R
- 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
Description
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.
Specifications
| 5 Volt Data Logging Inputs | Yes |
|---|---|
| 50 State Legal | No |
| AC Adapter | No |
| Accepts Custom Tunes From CMR | Yes |
| Body Material | ABS |
| CARB (California) Compliant | No |
| Case Included | No |
| Color Display | Yes |
| Color Touch Screen Display | Yes |
| Custom Tuning | Yes |
| Data Logging | Yes |
| Erases Fault Code | Yes |
| Fuel Type | Gasoline |
| Grade Type | Regular |
| In Cab Monitoring | No |
| Instruction Manual Included | Yes |
| Performance Tunes | Yes |
| Personal Computer and Mac Compatible | Yes |
| Software Included | Yes |
| Speedometer | Yes |
| Systems Covered | Transmission |
| Upgradable | Yes |
| Video Capable | No |
| Wi-Fi Updates | Yes |
| UPC / GTIN | 00810065217394 |
| Warranty | Manufacturer's 1 Year Warranty |
| Year | Make | Model | Submodel | Engine |
|---|---|---|---|---|
| 2020 - 2023 | Chevrolet | Silverado 2500 HD | Custom, High Country, LT, LTZ, WT | 6.6L V8 |
| 2020 - 2023 | Chevrolet | Silverado 3500 HD | Base, High Country, LT, LTZ, WT | 6.6L V8 |
| 2020 - 2021 | GMC | Sierra 2500 HD | AT4, Base, Denali, SLE, SLT | 6.6L V8 |
| 2022 - 2023 | GMC | Sierra 2500 HD | AT4, Denali, Pro, SLE, SLT | 6.6L V8 |
| 2020 - 2021 | GMC | Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 6.6L V8 |
| 2022 - 2023 | GMC | Sierra 3500 HD | AT4, Denali, Pro, SLE, SLT | 6.6L V8 |