SKU: 28156230858

Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit - 550-1631LSD

Sale price$1597.47 Regular price$1774.97
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit - 550-1631LSDOverview: 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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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: 28156230858

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4.1 ★★★★★
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Brian C
Chelsea, US
★★★★★ 5
Comfortable Everyday Cotton Shorts
Size: XX-Large, Color: 2 Pack - Black
Soft fabric, good stretch, and a relaxed fit that lands at a perfect length, these shorts hit that sweet spot between lounge wear and quick‑errand gear. The waistband has enough give without feeling flimsy, the pockets are actually usable, and the overall feel stays comfortable through the day. For the price, they’re an easy pickup that delivers exactly what you want from simple cotton shorts.
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Reviewed in the United States on April 9, 2026
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Reece
Natrona Heights, US
★★★★★ 4
Good for the price
Size: X-Large, Color: 2 Pack - Black
they're very good for the price. There's definitely alot of noticeable cost cutting (material feels kind of thin, and the inside of the shorts look "rough" and unfinished). But still they look good and are comfortable and light. Great for summer and will live up to their price. fits well.
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Reviewed in the United States on September 16, 2025
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Brian D.
Louisville, US
★★★★★ 5
They are comfortable!
Size: X-Large, Color: 2 Pack - Navy
I really like them. Pockets are very helpful and the size was right for me eventhough it was suggested a size bigger. Washed both already and noticed no shrinkage. Very comfortable and the length is just above the knees. Great for hanging about, in the gym or even a trip to the store.
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Reviewed in the United States on May 29, 2026
F
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Furbaby's Mama
Birmingham, US
★★★★★ 5
BIG GIRLS LOVE 'EM TOO!
Size: 3X-Large, Color: 2 Pack - Black
I am a plus size gal. I was looking for some sleep shorts, but all the ones for us plus size gals were so short I may as well not have been wearing anything. I decided to look in men's shorts, and found these. They are nice and long, and the material is nice and soft. Also, unlike the women's shorts, the pockets in these are nice sized, big enough for my phone and then some. There's a drawstring, but the elastic in these is plenty to keep them up and riding at my waist, where they're supposed to be, without having to tie them. Typically I wear a 2X, but I purchased these in a 3X because I like a little more room in my PJ bottoms, and they fit great. The only thing I don't care for necessarily is that the elastic waistband is just a smidge scratchy, but after wearing them a while I found it didn't bother me. And the price is pretty good for two pairs - much cheaper than women's plus shorts. I liked them enough that I came back and bought 4 more pair!
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Reviewed in the United States on April 2, 2026
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Kahtii
Whiting, US
★★★★★ 5
Comfortable and stretchy shorts with pockets!
Size: XX-Large, Color: 2 Pack - Black, Size: XX-Large, Color: 2 Pack - Black
For the most part, I've exclusively worn pants/jeans/slacks since my teens, I'm pretty sure that I've worn a skirt or dress on only 2 occasions in my life, and the skirt part was ankle - floor length those 2 times... Just to paint a picture for anyone reading my review knows how serious I am about hiding my almost reflectively white legs. At least up until I moved from the West Coast all the way to Oklahoma. Not only did I realize that I've taken California/PNW weather for granted all these years, but I quickly learned that I would now be wearing shorts every chance I get in this heat. These shorts aren't made with a heavy type of fabric, they are stretchy and lightweight, and they even have pockets! My wardrobe color pallet is mostly just black or slightly different shades of black, so of course I got these shorts in black. Plus Fruit of the Loom has been a known name brand for as long as I can remember. These are a great value for the money, great quality so far, and the waist is easy/self-explanatory to adjust. I would like to point out that the tie string in the waist somehow got tangled with a stray string or tie string attached to something else in the same load of laundry I put the shorts in. I ended up having to cut off the part that was frayed from getting tangled, so I suggest that the tie around the waist of theses shorts should be knotted/tied together to hopefully avoid the tie string from fraying in the wash or something.
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Reviewed in the United States on August 22, 2025

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