SKU: 84398565494

Unlock AND TuneinTune 3 for 2020-2023 6.6 L8T Unlock and Tune Kit 8266-R

Sale price$391.03 Regular price$434.48
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

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Description

Unlock AND TuneinTune 3 for 2020-2023 6.6 L8T Unlock and Tune Kit 8266-RThe 2020 2023 6. 6 L8T GM gas trucks have been locked down since their introduction. Owners of these trucks have been waiting patiently for a tuning solution, and DiabloSport has delivered in a big way! The new 8266 R kit includes our inTune 3 handheld tuner, along with our industry exclusive locksmith device and harnesses required to unlock the ECM in your truck. Once unlocked, the inTune 3 offers up tunes for 87, 91 and 93 octane fuels, as well as 2

The 2020-2023 6.6 L8T GM gas trucks have been locked down since their introduction. Owners of these trucks have been waiting patiently for a tuning solution, and DiabloSport has delivered in a big way! The new 8266-R kit includes our inTune 3 handheld tuner, along with our industry exclusive locksmith device and harnesses required to unlock the ECM in your truck. Once unlocked, the inTune 3 offers up tunes for 87, 91 and 93 octane fuels, as well as 2 transmission tunes to choose from. Beyond the preloaded tunes, we offer a host of user adjustable parameters, like throttle response, speed limit, tire size, and more. We've even added some new features for drivers of these newer trucks, like the ability to recall your last mode setting! Get power you can feel, with DiabloSport!


Features:

  • 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

Specs:

Brand DiabloSport
Emission Code 7
Product Type Hand Held Programmer
Sale Category Tuners and Programmers
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 84398565494

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Size: 48in, Color: 3tier
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Reviewed in the United States on November 13, 2025
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Beautiful but…
Size: 48in, Color: 3tier
I have bought a half dozen of these shelves over the years and installed them in my own home and family members homes. They are beautiful once they are up. The quality of the pipe and wood are great, heavy duty. BUT Somehow I seem to forget that the installation is a complete nightmare-borderline not worth it. The pipe never likes to line up properly and when it does it’s just not tight leaving the whole thing feeling wobbly. Once installed it is very beautiful and sturdy. The other part I also seem to forget is that the anchors are complete and utter crap! Save yourself the frustration and TOSS THEM immediately. Its a huge waste of time attempting to use them and your so pissed off by the time you realize it that you almost don’t even want the shelf anymore😂 In summary- Beautiful, quality shelf but buy your own anchors and round up you patience prior to install.
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Reviewed in the United States on October 5, 2025
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Jessica
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★★★★★ 5
like that
Size: 48in, Color: 3tier, Size: 48in, Color: 3tier
I like to have a three-dimensional wall shelf at home. I can display plants, photos and other items well. It is great. I haven't taken care of it yet. I need to put more beautiful items. Oh, by the way, it is of good quality. It is a little heavy. The merchant provides expansion screws for hanging it on the wall. It is also very simple to assemble... I am very satisfied with the effect and I like it very much.
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