★★★★★ 5
Very Nice
Size: Pack of 1, Style: Fuel System Treatment
Very Nice Item and Fast Shipping!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2020
Holley EFI Terminator X Max 6l80/6l90 Transmission Kit
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Holley EFI Terminator X Max 6l80/6l90 Transmission KitOVERVIEW Add GM 6L80 90E transmission control to any existing vehicle utilizing a Terminator X Max ECU. A departure from traditional Holley EFI transmission control, the Terminator X Max ECU allows the ability to use 2007+ GM 6L80E and 6L90E transmissions by communicating via CAN with the internal TCM (Transmission Control Module). The supplied Holley EFI OBDII Transmission Tuning Handheld is used to adjust Shift Points, Tire Size and Gear Ratio. The
Quick Dispatch:
Your Holley EFI Terminator X Max 6l80/6l90 Transmission Kit orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Holley EFI Terminator X Max 6l80/6l90 Transmission Kit ships.
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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
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4.2 ★★★★★
Based on 2152 reviews
Sort
Product Reviews
★★★★★ 1
Cheap
Size: Pack of 1, Style: Fuel System Treatment
Didn’t make an executive
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
★★★★★ 5
Great diesel treatment for everyday use
Size: 128 fl. oz, 1 Pack
I use this Hot Shot’s Secret Everyday Diesel Treatment for my diesel truck, and it has been a great product to keep on hand. The 1-gallon size is a good value because it treats a lot of fuel and makes it easy to use regularly. I like that it is made for everyday diesel maintenance, not just occasional use, and it gives me extra confidence that I am taking better care of the fuel system. A very practical product for diesel owners who want something reliable for regular use.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Noticeable MPG boost for my F-250!
Size: 128 fl. oz, 1 Pack, Size: 128 fl. oz, 1 Pack
I’ve been using this Everyday Diesel Treatment in my F-250 for a while now, and the results are legit. The most impressive part is the improved fuel economy—I’m definitely getting more miles per gallon than before.
The engine also sounds smoother and seems to have better throttle response. I love that this one-gallon jug treats so much fuel, making it a great value for the price. If you want to keep your fuel system clean and save some money at the pump, this is a must-have. Will definitely keep buying!
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Great product
Size: 1 Count (Pack of 1)
This stuff provides a smoother acceleration and overall effectiveness for the motor. With the added benefits of lubricating the fuel pump?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
