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
Save 10%

Pay in installments of $443.74 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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.
  • 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: 28156230858

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 11 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
E
Verified Purchase
Edisson Salazar
Birmingham, US
★★★★★ 4
Frustrating to set up and unreliable
Style: ET-4800, Color: White, Set: FAX/ADF/Print/Copy/Scan
I bought the Epson EcoTank ET-4800 hoping for an easy, low-cost printing solution, but it has been nothing but trouble. The wireless setup is overly complicated, and the printer often loses connection to the network, forcing me to restart it or reinstall the software. Printing is slow, even for simple documents, and the paper feeder sometimes pulls multiple sheets at once. While the EcoTank system is supposed to save money on ink, the print quality is inconsistent — colors can be dull, and black text occasionally appears streaky. Scanning and copying are also sluggish. For the price, I expected something much more reliable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 9, 2025
I
Verified Purchase
Irving M. Lamansky
Bozeman, US
★★★★★ 5
ET-4800 EZ PZ set up and start up. Prints and scans just fine
Style: ET-4800, Color: White, Set: FAX/ADF/Print/Copy/Scan, Style: ET-4800, Color: White, Set: FAX/ADF/Print/Copy/Scan
An excellent home printer. And why did I purchase such? I had an Epson WF-520 for nearly ten years. But neglect and lack of use caused the printer head to get gunked up. I cleaned the print heads using a solution of 95% Etoh and glass cleaner (about fifty/fifty), a syringe with a plastic tube attached and LOTS of paper towel strips. It was moderately successful but I was never able to get it back to like new printing. I looked over several new printers and wanted to stay with Epson because of ease of use (copy, scanning, printing). Seems as tank printers are the way to go these days. So I ordered the ET-4800. Got here in only a couple of days. Setup was pretty easy, just follow the instructions either via the documentation included or online version. I have pinted and scanned a color test page. I used the built in SmartScan feature without having to think about it much. I am quite satisfied with the results. By the way, there is no automatic two side printing. You actually have to get off your b---, take out the first printing, turn it over and refeed the stack. I was used to doing that with the old WF-520 and never had a problem. I will now set up a once a week, automatic scheduled printing task. I will just have to make sure there is paper on hand. Lack of use is the killer of these inkjet machines regardless of manufacturer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
T
Verified Purchase
Thomas Weaver
San Leandro, US
★★★★★ 5
The intensity of the higher DPI and other settings makes this a marvelous Printer.
Style: ET-4800, Color: White, Set: FAX/ADF/Print/Copy/Scan
I am a former Canon product user for years. I became disappointed two printers ago. Support is horrible. So, I ordered this Epson. Initially, because of the differences I was somewhat confused on the set-up; however, once completed, I can completely endorse this product. The printing is absolutely tops. The ink system is fantastic. AND, it has fax capabilities which I tested and works great. Can not say enough good things about it. I specialize in historical photo and documentation restoration - and this printer works GREAT.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
D
Verified Purchase
Daniel G Forster
Houston, US
★★★★★ 3
It’s about support more than anything else !
Style: ET-4800, Color: White, Set: FAX/ADF/Print/Copy/Scan
Printer worked great until it didn’t. Cleared a paper jam that kept giving an issue. Then it gave a scanner error, after paper jam was resolved. I called support; they gathered all my info. Transferred me to someone else who then told me she’d email me some numbers to call for deals on refurbished printers or onsite support. I ended ups solving the problem… I threw the printer in the trash, and will likely not buy anymore epson products. I was willing to pay for service but not waste more time and making more phone calls. I had a credit card; i was willing to use it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
B
Verified Purchase
B.Nicole
Chelsea, US
★★★★★ 5
My Go-To Sublimation Paper — Flawless Results Every Time
Size: 8.5"x11", Size: 8.5"x11"
This is hands down the best sublimation paper I’ve used and the only one I continue to buy. I get a perfect transfer every single time—no fracturing, no fading, and no uneven results. The paper dries fast, which makes my workflow so much smoother, especially when I’m producing items in batches. I use this regularly to make air fresheners and tote bags for my small business, and the color payoff is always vibrant and crisp. The transfer rate is excellent, and it works beautifully on light-colored, high-quality polyester and other sublimation-ready surfaces. If you’re a small business owner or crafter who values consistency, quality, and ease of use, this paper is absolutely worth it. I highly recommend it and will continue to repurchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026

recommand products