Ignitions and Electrical› Computers, Chips, Modules and Programmers

DiabloSport

2020-2023 GM 2500/3500 6.6 Gas inTune 3

$1,101.06

SKU: D00D 8266-R

In Stock
In Stock
Ships by Jun 11
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The DiabloSport 8266-R kit provides an inTune 3 handheld tuner, locksmith device, and harnesses to unlock and tune 2020-2023 6.6L L8T GM gas trucks. It offers preloaded tunes for 87, 91, and 93 octane fuels, along with two transmission tunes. Users can adjust parameters like throttle response, speed limit, and tire size. A new feature allows recalling the last mode setting. This kit enables in-driveway unlocking and tuning of compatible vehicles.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandDiabloSport
Part NumberD00D 8266-R

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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