Transform Your 2020-2023 GM L8T Truck at Home

Ready to unlock the full potential of your 2020-2023 GM L8T powered truck? With our 2866-R Flashpaq kit, you can easily tune your vehicle right from the comfort of your home! This kit comes with our exclusive Locksmith device and ECM harness, paired with the popular Flashpaq handheld device, allowing you to tune without the hassle of removing the ECM.

Boost Your Truck's Performance

Once you've unlocked your ECM, you’ll have access to a variety of tunes designed to add impressive power to your 6.6L gas truck. You’ll notice improvements in throttle response, shifting, and so much more. Whether you’re using 87 octane or premium fuel, we've got you covered with tunes that cater to both, along with options for the 6-speed transmission. Plus, you can fine-tune settings like throttle boost, speed limiter, and tire size!

Key Features

• Gain up to 28 RWHP/50 RWTQ over stock on 93 octane fuel
• Correct your speedometer for tire size adjustments
• Set your final drive ratio
• Easily adjust the rev limiter
• Customize idle RPM in Drive/Neutral
• Remove the speed limiter for a smoother ride
• Adjust throttle sensitivity to your liking
• Recall your last mode setting with ease
• Front/Rear TPMS threshold adjustment
• Transmission adaptive relearn
• Crank position sensor relearn
• Control the intake filter monitor system

Important Note

• Make sure to unlock the ECM before using the Flashpaq to tune your vehicle. Once unlocked, the Locksmith device and harness will no longer be necessary.

Emissions Information

This product is compliant with the EPA's Tampering Policy as of November 23rd, 2020. Our testing results confirm that this product allows your vehicle to operate within legal emissions standards, making it suitable for on-street use in all states that adhere to the Clean Air Act and the EPA Tampering Policy. Please note that this product is NOT LEGAL FOR SALE OR USE IN CALIFORNIA. We are currently undergoing testing with the California Air Resources Board to achieve 50-state compliance. Once testing is complete and an E.O. number is issued, we will update the product status accordingly.