Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit - 550-1621
SKU: 1811762810

Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit - 550-1621

Sale price$1484.97 Regular price$1649.97
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Description

Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit - 550-1621Overview: Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete control of your engine, self learning fuel strategies and the proven, race winning technology of Holley EFI at a budget friendly price! Terminator X features real time fuel learn, an integrated 1bar MAP sensor, and four programmable inputs and outputs. The inputs and outputs

Overview:

Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price! Terminator X features real-time fuel learn, an integrated 1bar MAP sensor, and four programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X comes fully loaded with base maps for common LT engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. All Gen V LT Terminator X kits will come with an external Gasoline Direct Injection Controller, which enables the end user to control and tune, factory injectors, GM Gen V LT Variable Valve Timing (VVT), and factory fuel pumps. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building, an LT swapped budget beater or a boosted racecar, Terminator X has the features and technology you need at a price that will not break the bank! To identify if your engine is an early or late application, refer to your fuel pressure sensor, located behind the intake manifold. Early sensors have a 4-pin connector, whereas late sensors have a 3-pin connector. This will help you pick which kit you require for your engine.

Features:

  • Plug and play GM Gen V LT engine control including GDI and VVT support
  • Ideal for swapping late model GM Gen V LT engines into vintage vehicles
  • 3.5” handheld gets your engine running in no time with a step-by-step calibration wizard
  • GM LS and LT Drive-by Wire Throttle Body Control (Terminator X Max Only)
  • GM 4L60 and 4L80 Transmission Control (Terminator X Max Only)
  • Included engine harness plugs directly into the factory LT DI injector sub harness
  • OEM Injectors supported, with part numbers provided in the handheld wizard, or software
  • Genuine Bosch LSU 4.9 Wideband Control (Will not work with LSU 4.2 Oxygen Sensors)
  • On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal – Cam Signal – VVT Status – Pump Control – and DI Injectors. Allowing you to identify any Critical engine issues at a glance
  • Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths) - or for Boosted applications, you can disable the internal MAP sensor, and utilize an external LT MAP Sensor, the harness comes with the connector terminated, making the inst
  • 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (Fuel and Oil Pressure Inputs are pre-terminated)
  • 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and more
  • Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
  • Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
  • Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table
  • Integrated data logging to the 3.5” Handheld SD Card
  • Free EFI Tuning Software for complete control of your Terminator X power plant

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Brand Holley EFI
Emission Code 3
Product Type EFI System
Warning California Proposition 65
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 1811762810

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Inlet Sound
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★★★★★ 5
29 years of riding a Harley, THIS is the best sun protection I have found for long SUNNY day rides!
Size: 6 Ounce (Pack of 2), Style: SPF 50, Size: 6 Ounce (Pack of 2), Style: SPF 50
This is my "Go To" Sunscreen of choice that I find is the best to quickly spray my arms down good before a long Harley Motorcycle ride! I have tried many brands and styles from creams to face specific to lip balm but this one can does it all in my case! I quickly spray my arms ( no rubbing in required ) and a quick spray in my hand and I then rub my nose and ears , face and i'm ready to ride and I am protected! Most times I only apply this product once a day and works better than anything else for my needs. I am light skin but I have ridden lots this Summer and my arms never burn and now have a deep tan as we are entering fall... I made the mistake of trying a store brand that looked like this product but was oily and never used it but once! This Banana boat once sprayed on my arms, I never think about it again as its gone but still protecting my skin! This is the best I have found after 29 years or riding a motorcycle to protect my skin with the least amount of trouble , No strange or tropical smell, NO greasy feel just quick applied lasting sun protection that has proven itself mile after mile! The BEST Sun product I have found!
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Reviewed in the United States on October 7, 2025
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Carolyn M Thomas
Charlottesville, US
★★★★★ 4
It is quick to apply and I've never gotten a burn with it. It doesn't leave marks on my clothing.
Size: 6 Ounce (Pack of 2), Style: SPF 50
I've used this product for years. I spray it into my hands to apply so it doesn't go out into the air. I have never gotten a burn with it and it is. so easy to apply. I don't have to worry about white marks in my clothes. It doesn't take long to apply.
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Reviewed in the United States on March 30, 2026
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Hunter
Louisville, US
★★★★★ 5
Affordable and Effective
Size: 6 Ounce (Pack of 2), Style: SPF 50
It’s really good for the price and super easy to apply. I would recommend having someone help with your back or harder-to-reach areas, because any spots you miss will definitely show if you’re out in the sun for a while. I’ve used this for a couple of years now, and it’s one I keep going back to. If you have more sensitive skin, there may be better options out there, but I personally haven’t had any issues with it so far.
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Reviewed in the United States on April 18, 2026
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Steve H
Chelsea, US
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This is really a great product and easy to use as a spray. I bike ride every day and my ears/face are exposed to the Florida sun. I use it primarily on my face every day. A moment after a quick spray, the product dries, is not sticky, etc. This will become a recurring purchase.
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Jules
Draper, US
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Good protection from the sun.
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Does a good job keeping sunburns away. Spray sunscreen never lasts as long as rub-in sunscreen (ie, the bottles run out quicker) so it seems pricier to cover the whole family, but we keep this on hand for days we'll be outside!
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