SKU: 65944556598

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

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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
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SKU: 65944556598

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★★★★★ 5
great read for underwriters of multifamily deals
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Rob lays out a succinct and thorough summary of his underwriting process, questions industry standards while sharing his opinions, and discusses risk management and analyses for deals during the underwriting process. Highly recommend for newer and more seasoned underwriters and investors to build or sharpen multifamily underwriting fundamentals and details. He also shares his model as the example.
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Reviewed in the United States on September 27, 2023
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LongBoarder
Alexandria, US
★★★★★ 3
Needs more meat
Format: Paperback
A little on the light side of information provided. Some nuggets. OK value.
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Reviewed in the United States on December 16, 2022
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Matthew Sinn
Port Orchard, US
★★★★★ 5
Full of useful information
Format: Paperback
As context, I've underwritten about 100 deals and attended some basic underwriting classes. Rob's book was very useful to me, both in helping me gain better skills in underwriting basics (stabilization time period and how unit renovations and rent bumps are modeled/phased-in as well as when to start applying rent escalator) as well as higher level topics, like partnership structures, sensitivity analyses, and judging the returns. In all of these higher level topics I learned several new topics (and calculations to add to my underwriting) and would guess that even experienced investors would pick up a few quality nuggets in these sections.
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Reviewed in the United States on May 27, 2020
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NegativeG
Dallas, US
★★★★★ 5
A Grounding, Practical, and Surprisingly Reassuring Guide for the Modern College Search
Format: Hardcover
Our family absolutely loves this book, having followed Jeff for many years, purchasing this was an easy choice. We’ve been deep in the college search process for a while now, and like many families, we spent a lot of time trying to balance ambition, fit, finances, outcomes, and the emotional side of it all. “Dream School” was one of the few resources that actually helped us calm down and make clearer decisions. What stood out most is how realistic and grounded the book is. You'll keep wanting to go to the end to look at the list of schools, but read the book. It doesn’t push prestige for the sake of prestige, and it doesn’t pretend that college admissions follow a straight line. Instead, it helps you think honestly about what a “right fit” really means...academically, socially, financially, and emotionally. For our family, this gave us a framework to rationalize all the moving pieces rather than chasing names or getting overwhelmed by noise from online forums and comparison culture. As we evaluated schools across different regions, majors, sizes, and price points, this book helped us step back and ask the right questions. It pushed us to think about values and outcomes instead of just rankings. It helped us understand why certain schools felt like better matches, even if they weren’t the ones everyone talks about on social media. Most importantly, it gave us permission to stop second-guessing ourselves and to trust the process we built together. Anyone going through the modern admissions process knows it can become emotionally exhausting, with hyper-competitive acceptance rates, endless online commentary, and constant chats with ChatGPT, which tells me what I want to hear rather than the truth. This book eased a lot of that stress. It helped our family see the big picture, prioritize what truly matters, and make decisions with confidence rather than fear of missing out. If you’re a parent or student trying to navigate the college search in a thoughtful, balanced way, I can’t recommend “Dream School” enough. It doesn’t just help you find the right college, it helps you remember why you’re doing this in the first place.
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Reviewed in the United States on December 6, 2025
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Tracy Y.
Massapequa, US
★★★★★ 5
Parents of HS Students: READ THIS BOOK!
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A must-read book for parents navigating the "IVY OR BUST" aspirations of all top-performing high school students. Families simply can not afford the near-100K/year tuition for these institutions. It's unsustainable, and adding soul-crushing debt (before a career is even begun!) is not what parents want for our students. Enter Dream School: a guide to finding YOUR student's opportunity (and less expensive education) amid the noise and rah-rah of aggressive college recruiting. The book is a fast, comprehensive read which gives parents guidance and "permission" to consider schools with less name recognition/lower cost, but with high performance teaching and reasonable return on investment (ROI.) Remember the goal: a college degree for a happy, fulfilled student ready to enter the job market or grad school.
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Reviewed in the United States on September 12, 2025

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