Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit - 550-1631
SKU: 12543723708

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

Sale price$1597.47 Regular price$1774.97
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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9

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Description

Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit - 550-1631Overview: 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
  • 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: 12543723708

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JVH
Massapequa, US
★★★★★ 5
Winner, Winner! say My Three Dogs
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
I'm always looking for different treats for my three dogs (10, 20 and 30 pounds, I don't ever recall giving my dogs anything with a pumpkin flavor, so I decided to trythese i-paw pumpkin flavored treats (I got the rings). All three of my dogs took the treat immediately and went off into their separate corners to chew away (one of my dogs is pretty fussy, so I was surprised she took it without hesitation). I'm no expert in dog treat ingredients, but I didn't see anything on the ingredients list that looked objectionable. While advertised as a rawhyde replacement, these rings don't last anywhere near as long as a rawhide, so while my dogs didn't wolf them down as fast as a conventional treat, they weren't left occupied for the half hour that a rawhide of this size might have kept them entertained (except for one of my dogs, who took an hour to finish hers, but she only has 7 teeth left in her mouth, so that's not really a fair comparison). I wouldn't hesitate to order these treats again for my pups.
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Reviewed in the United States on May 29, 2025
K
Kelly
Cuba, US
★★★★★ 4
Lab tested. Lab approved. WAY too expensive.
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
My dog likes these. But they don't really last all that long. And the package only included 5-6 rings. So that's an expensive treat, when I can get a bag of 40 dental treats (5" sticks) for the same price. Would I buy these again? No
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2025
M
Verified Purchase
Maria V. Ogoy
Waukegan, US
★★★★★ 3
Picky
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
I've got a picky dog. He likes what he likes. He liked them at first but then lost interest.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
E
E. Marie
Lexington, US
★★★★★ 5
Small ingredient list -- BIG taste!
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
This snack is tasty, given its simple formula of sweet potatoes, turkey, coconut, and soy protein isolate. The bag arrived at the house, and the girls were instantly ready for the latest and newest snack. There were four treats total in my bag - one for each baby. The smallest one (20 lbs), ironically, disappeared her treat faster than her three larger siblings (40 lbs). The bigger dogs savored their treats with smelling, licking, tasting, and chomping with elation on these tasty new treats. These chewies satisfy your girls between meals, which I noticed by them not bugging me for food hours before dinner. These seemed to do the trick and hold them over. A great appetizer, in my opinion.
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Reviewed in the United States on May 30, 2025
A
A. Fabbri
Carnegie, US
★★★★★ 5
My dog absolutely loves these treats
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
These turkey + sweet potato treats are a hit with my dog. Likes: - Good size. Substantial enough to be classified as a "special treat". - Good ingredients and nutrition. - Zero issues with digestion. - Arrived fresh and in great condition. - Good value. Dislikes: - Like most treats, they don't last that long. They are no bully stick--they go faster. Overall my dog loves these treats!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2025

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