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
Save 10%

Pay in installments of $108.62 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 9 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
mairen portilla
Battle Creek, US
★★★★★ 5
Energía
Item Package Quantity: 1
Excelent. I have more energy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
L
Verified Purchase
Lora Hilliard
Massapequa, US
★★★★★ 5
Works amazing. Works just like they say!
Item Package Quantity: 1
Theses taste good and they really worked for me. They did what they said they would.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
T
Verified Purchase
T
Chelsea, US
★★★★★ 4
WOULD RECOMMEND
Item Package Quantity: 1
GOOD FLAVOR, SEEMS TO BE WORKING. IVE GONE TROUGH 4 BAGS SO FAR AND FEELING FRESH AND CONFIDENT!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
M
Verified Purchase
Micah
West Palm Beach, US
★★★★★ 2
Not the worth the $
Item Package Quantity: 1
I just received the feminine balance gummies in the mail. By mistake ordered the wrong product and unable to return i opened the gummies and they have a funny smell and definitely don't taste like pineapple. Although my boyfriend who tried them as well says they do taste like pineapple. Idk but it was not worth the price either way.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
Y
Verified Purchase
YXW
Los Angeles, US
★★★★★ 5
Nice taste and good mood
Item Package Quantity: 1
This gummies taste like normal tropical gummies. I like the texture that every time I take it I feel good. The nutrients are comprehensive. The gummy can cover many necessary nutrients requirements. Smells like tropical fruit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026

recommand products