SKU: 65944556598

Holley EFI Terminator X Max GM Gen V LT Early Direct Injection Kit - 550-1620LSD

Sale price$1484.97 Regular price$1649.97
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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Description

Holley EFI Terminator X Max GM Gen V LT Early Direct Injection Kit - 550-1620LSDOverview: 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
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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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]
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SKU: 65944556598

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ecccc
Pawtucket, US
★★★★★ 5
Love it!!
Color: Rose, Style: 1/2 inch, Color: Rose, Style: 1/2 inch
i saw a lot of bad reviews after i had ordered this product so i was a little scared, but it did come with the strap to secure it which i love keeps it all rolled up together, it’s not slippery at all i also saw reviews about that the ribbed design is a bit different to my liking but it’s still very comfortable, it kind of reminds me of memory foam. The color is such a muted pink but so pretty and it’s very lightweight!! it’s definitely worth the money very good quality
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Reviewed in the United States on February 23, 2026
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Chelsie Peters
Port Orchard, US
★★★★★ 3
Fishy but nice
Color: Ocean Blue, Style: 1/2 inch
Very large and pretty color. It’s nice and thick and the material is nice. It smells like fish. It’s like they stored it in a fish market and wrapped it up. Aside from that, would recommend.
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Reviewed in the United States on May 13, 2026
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Jeffrey Bordner
Battle Creek, US
★★★★★ 5
Great Option for older, beginner workouts
Color: Gray, Style: Yoga Mat
I am a 54-year-old woman with multiple issues dealing with my weight, knees, and hips. The support of this particular mat is thick enough that there is no pain when being on my knees or lying down. It does not pinch your pressure points, causing pain as a thinner mat would. I am very pleased with the quality of this mat; it feels durable and I do not worry about my flopping around and destroying it while I learn the proper positions I need for my exercises. The length and width is sufficient for my 5 foot 11 inch height and extra girth. I was not looking for anything in particular in terms of design or color, as I prefer functionality, and this is to be used at home as a beginner mat while I start my exercise program.
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Reviewed in the United States on February 4, 2026
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Brenda V.
Birmingham, US
★★★★★ 5
Nice and thick great quality, easy to carry and store
Color: Wine, Style: Yoga Mat, Color: Wine, Style: Yoga Mat
Loved it its super thick compare to others its teally comfortable and has great grip and doesnt slide. The color is super cute and bright and itcomes with a strap which makes it easy to carry and store.
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Reviewed in the United States on May 15, 2026
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Md Romim Somadder
New York, US
★★★★★ 5
Great Quality Mat for the Price
Color: Gray, Style: Yoga Mat, Color: Gray, Style: Yoga Mat
After burning through several cheap mats that curled, bunched, or wore out within weeks, this one finally got it right. The 1/2-inch high-density foam provides real cushioning, my knees and wrists feel the difference immediately, and it holds its shape without feeling unstable during balance poses. Grip is solid on hardwood and carpet alike, and the included carry strap is a small but genuinely useful touch that makes hauling it to the gym effortless. It's a bit bulky for travel, but for home or gym use it's hard to beat at this price. The quality speaks for itself, this feels like a mat built to last. Highly recommend.
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Reviewed in the United States on April 25, 2026

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