The DiabloSport Trinity 2 GM 6.6L L8T unlock and tune kit opens tuning access on 2020-2023 GM 6.6L L8T gas trucks such as the Silverado and Sierra, which have been locked since introduction. The kit includes the in-dash Trinity 2 tuner, the locksmith device, and the harness required to unlock the ECM. Once unlocked, the Trinity 2 offers preloaded 87, 91, and 93 octane tunes, two transmission tuning options, and user-adjustable parameters such as throttle response, speed limit, tire size, and DFM disable.
Specifications:
- Product line: DiabloSport Trinity 2
- Type: in-dash programmer with ECM unlock and tune kit
- Includes Trinity 2 on-dash programmer, locksmith device, and unlock harness
- Unlocks the ECM for full tuning access
- Preloaded 87, 91, and 93 octane tunes
- Two transmission tuning options
- User-adjustable parameters including throttle response, speed limit, tire size, and DFM disable
- Part number: 9266-R
Fitment: 2020-2023 GM 6.6L L8T gas trucks, including Silverado and Sierra.
Emissions compliance: This part is legal for on-street use under the EPA Tampering Policy of November 23, 2020 in states that follow that policy. It is not currently legal for sale or use in California, where CARB testing is pending. A California Proposition 65 warning applies.
FAQ
What is included in the 9266-R kit?
The kit includes the Trinity 2 on-dash tuner, the locksmith device, and the harness required to unlock the ECM on 2020-2023 GM 6.6L L8T gas trucks.
Why is an unlock kit needed for the L8T?
The 6.6L L8T trucks ship with a locked ECM that blocks tuning. The locksmith device and harness unlock the ECM so the Trinity 2 can load calibrations.
What tuning options are available?
Once unlocked, the Trinity 2 offers preloaded 87, 91, and 93 octane tunes, two transmission tuning options, and user-adjustable settings including throttle response, speed limit, tire size, and DFM disable.
Is this kit legal in California?
No. This tuning kit does not currently carry a CARB Executive Order and is not legal for sale or use in California. It is intended for use in states that follow the EPA Tampering Policy of November 23, 2020.
