SKU: 49055949792

Holley EFI Terminator X GM Gen V LT Late Direct Injection Kit - 550-1601

Sale price$1237.47 Regular price$1374.97
Save 10%

Pay in installments of $343.74 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 23 - Jul 28

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley EFI Terminator X GM Gen V LT Late Direct Injection Kit - 550-1601Overview: 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.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 49055949792

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 30 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Michelle
Waukegan, US
★★★★★ 5
Husky approved!
Color: Cheers
Got this for my large husky to wear for his 10th birthday. He didn't tear it up right away. The squeaker lasted longer than it does with most toys. He seemed to genuinely enjoy the toy. Removed the stretchy string once I got a few pictures so he wouldn't eat it. Very cute.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2026
S
Verified Purchase
Sammy1089
San Leandro, US
★★★★★ 5
Buy Me, I’m Ideal
Color: Bark-Day
Perfect size for my small dog
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
A
Verified Purchase
Audry
Alexandria, US
★★★★★ 5
5 Stars - My Gentle Giant Loves It!
Color: Pawty, Color: Pawty
I got this toy for my German Shepherd, who is very gentle and loves soft plush toys. Even though he’s a big dog, he’s careful and enjoys playing gentle tug-of-war so the rope part as the string is perfect. The toy was a little smaller in length than I expected, but it hasn’t mattered at all — he absolutely loves it! It’s soft, thick, and has a squeaker deep inside that will make it hard for a dog to pull out. It is cute, and has held up well to a lot of carrying around and light tugging. If you have a gentle dog who loves plush toys, I definitely recommend this one. I would absolutely purchase it again! Fun little dog birthday gift.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2025
A
Verified Purchase
Ashley
Birmingham, US
★★★★★ 5
Stupid cute!
Color: Crown, Color: Crown
My Lily looked so cute on her first birthday and it was so easy to put on. It doubles as a toy if you want to cut the band off. It's got a crinkling sound, no squeaker
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 24, 2025
J
Verified Purchase
Jessica
Los Angeles, US
★★★★★ 5
Not for tough dogs who chew
Color: Pawty
My dog loves it! We play tug of war and it’s still holding up. She is 40 pounds and is strong. But this would not be durable for dogs who rip things apart.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2025

recommand products