Chevrolet, GMC (6.6) Computer Chip Programmer (7266-R)

  • Delivers ready-to-load performance tunes for stronger power, better drivability, and improved towing on your 6.6 gas GM truck
  • Supports custom tuning and accepts custom tunes from CMR for a setup dialed in to your exact combination
  • Built-in data logging lets you monitor and analyze real-world engine performance
  • Easy-to-read color display keeps key information clear and accessible
  • Includes speedometer functionality to help keep readings accurate after modifications
  • Backed by the proven DiabloSport Predator 2 7266-R platform

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$749.95

Out of stock
SKU 7266-R

Description

Overview

The DiabloSport Chevrolet, GMC (6.6) Computer Chip Programmer is a purpose-built performance tuner designed to unlock the potential hiding in your gasoline-powered GM truck. Built around DiabloSport’s proven Predator 2 7266-R platform, this handheld programmer reflashes your factory computer with optimized calibrations that sharpen throttle response, improve drivability, and strengthen the powerband for daily driving, hauling, and towing duty.

For GM truck owners ready to transform performance, drivability, and towing strength, the Predator 2 7266-R Kit delivers the proven power gains and flexibility you’ve been waiting for. Instead of settling for the conservative programming that leaves the factory line, you get access to performance tunes engineered to make the most of your 6.6 gas engine.

Key Benefits

This programmer goes far beyond a one-and-done flash. With built-in data logging, you can monitor how your engine is performing in real time and capture the information you need to fine-tune your setup. The easy-to-read color display keeps critical information front and center, while integrated speedometer functionality helps you keep readings accurate after modifications.

Custom tuning capability is where this DiabloSport unit truly stands apart. It accepts custom tunes from CMR, so whether you run the ready-to-load performance tunes out of the box or work with a custom calibration dialed in for your exact combination, you have the flexibility to tailor power delivery to your goals.

Highlights

  • DiabloSport handheld programmer built on the Predator 2 7266-R platform for Chevrolet and GMC 6.6 gasoline engines
  • Loaded performance tunes for improved power, drivability, and towing strength
  • Custom tuning support, including custom tunes accepted from CMR
  • Built-in data logging to monitor and analyze engine performance
  • Color display for clear, at-a-glance readouts
  • Speedometer correction/monitoring functionality

What to Know Before You Buy

This tuner is engineered for gasoline-fueled GM applications and does not require a separate AC adapter for operation. It focuses on the essentials that enthusiasts rely on — performance tuning, custom tune compatibility, data logging, and a clear color display — rather than extras like Wi-Fi updates, video capability, in-cab monitoring, or a color touch screen.

Please note this programmer carries a California Proposition 65 warning and is not 50-state legal or CARB (California) compliant. It falls under Emission Code 7. Confirm that a performance programmer of this type is appropriate for your intended use and local requirements before purchasing.

Fitment

Designed for Chevrolet and GMC trucks equipped with the 6.6 gasoline engine. Verify your specific application and engine configuration to ensure this DiabloSport programmer is the right match for your vehicle.

Specification

Brand

Compatibility

2020-2023 Chevrolet Silverado 2500 HD LT WT Custom LTZ High Country : 401 & Cylinder: 8 & Block: V), 2020-2023 Chevrolet Silverado 3500 HD Base LT High Country WT LTZ : 401 & Cylinder: 8 & Block: V), 2020-2023 GMC Sierra 2500 HD SLT AT4 Denali SLE Base Pro : 401 & Cylinder: 8 & Block: V), 2020-2023 GMC Sierra 3500 HD Denali SLT SLE AT4 Base Pro : 401 & Cylinder: 8 & Block: V)

MPN

7266-R

Prop 65 Warning

Yes

Universal

No

Warning

California Proposition 65

AC Adapter

No

Speedometer

Yes

Data Logging

Yes

Sub Category

Engine Service

Color

No, Yes

Custom Tuning

Yes

Emission Code

7

Video Capable

No

Wi-Fi Updates

No

In Cab Monitoring

No

Performance Tunes

Yes

5 Volt Data Logging Inputs

No

CARB (California) Compliant

No