SKU: 46920257305

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

Sale price$1484.97 Regular price$1649.97
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

Holley EFI Terminator X Max GM Gen V LT Early Direct Injection Kit - 550-1620Overview: 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
  • 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: 46920257305

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Kindle Customer
New York, US
★★★★★ 4
So good and great price!
Flavor Name: Prickly Pear, Size: 25.4 Fl Oz (Pack of 1)
It taste good and what a great price! However it tastes very different than the Monin brand that I love. To me it taste a lot like the DaVinci cherry which btw is so YUMMY. Its not bad just different.
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Reviewed in the United States on April 17, 2026
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GIRLY
Massapequa, US
★★★★★ 5
Best ever
Flavor Name: Banana Bread, Size: 25.4 Fl Oz (Pack of 1)
I’ve tried a few others brands. This one is the best. I’ve drank flavored coffee for years. Banana bread is 10 star worthy, rich in flavor and it doesn’t take a lot. Very smooth. I like it alot. I’m not looking for another brand because I already know where it’s good. I don’t mess around with my coffee ☕️ 🍌 🌰 🍞
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Reviewed in the United States on May 16, 2026
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DávÏd Árí ÁmÏr
Massapequa, US
★★★★★ 5
Try it in a carrot cake, it is yummy!!!
Flavor Name: Chai Tea Concentrate, Size: 25.4 Fl Oz (Pack of 1)
I have without question been extremely happy with all of the DaVinci syrups, and products I have purchased. This chai syrup really was perfect for making chai lattes for my wife, and adding some chai flavor to other drinks, and I even used it in some cheesecake frosting, and inside of a carrot cake recipe, and it was perfect. I strongly suggest that you try it in carrot cake, and in other things like frosting. The chai carrot cake I made ended up being the perfect compliment to a nice cappuccino. I made a bunch of cupcakes using the carrot cake mix with the chai,and the chai cream cheese frosting, and with a nice coffee made the coffee taste better, and the carrot cake complimented the coffee perfectly. I have made them a few times now, and will say don't overdo and put too much frosting onto the carrot cake, and it is something I can't recommend enough. I actually have been using it more it making baked goods, and little desserts more then for chai lattes even. It just really works perfectly in them.
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Reviewed in the United States on April 8, 2026
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Shannon
Omaha, US
★★★★★ 5
Great deal! Yummy!
Flavor Name: Blue Raspberry, Size: 25.4 Fl Oz (Pack of 1)
Using for our dirty soda bar, this brand is a delicious addition to our flavors! Nice bottle, great price!
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Reviewed in the United States on May 27, 2026
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Nicholas
Natrona Heights, US
★★★★★ 4
Comparing to the coffee giant version
Flavor Name: Brown Sugar, Size: 25.4 Fl Oz (Pack of 1), Flavor Name: Brown Sugar, Size: 25.4 Fl Oz (Pack of 1)
Starbucks comparison (from a personal standpoint): I’m fortunate enough to have a bottle of Starbucks Brown Sugar. Problem is, I’m almost out. Looking around at some alternative options, and reading the reviews- I see some saying this is a good substitute. Because I happen to have the syrup on hand, I figured I should see if it is, because it would be great given the low cost of DaVinci syrup. This picture I’m attaching is just to see the color difference. Consistency wise, the DaVinci syrup is much lighter, more runny. The Starbucks is definitely a thicker liquid, that runs much slower. Flavor is the big one: DaVinci is lighter on taste, and sweeter. The best way to describe the flavor is comparing DaVinci’s to 100% real maple syrup that’s been diluted down with water. It’s good, but not really similar (in my opinion) to Starbucks Brown Sugar. Starbucks is more smokey in flavor, more strong/bold. My drinks are made using espresso, oak milk, cinnamon powder, and ice. I made my drink the same way, but used DaVinci Syrup this time. I found that the same amount of syrup that I use for the Starbucks, didn’t feel like it had a strong enough flavor. What did I do? I added an extra ounce of DaVinci hoping to get a stronger flavor. The problem is, DaVinci is more sweet than the Starbucks syrup (in my opinion) and ended up making my drink taste too sweet. It’s sweet enough that I’m not going to finish drinking it. I’m not knocking the DaVinci syrup itself. I think it’s a good brand and a good flavor. It’s just not the flavor I was hoping would solve my issue for a Starbucks imitation. I would encourage anyone to still try this syrup, but do so to enjoy it for being its own flavor.
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Reviewed in the United States on January 18, 2026

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