Terminator

Find The Right Terminator EFI System for You!

The video below lets you take a quick guided tour of the Holley Terminator systems that are available from EFI System Pro. Or, scroll further down and find an index of the different Terminator systems and a list of frequently asked questions about these amazing EFI systems. Enjoy!

Index of Terminator Systems

Holley has rather broadly applied the Terminator title to a broad range of different EFI Systems so our goal here is to try to break this down in a way that makes sense. Let us know how you think we did!  For a more detailed explanation of the differences between the systems listed here, read our Terminator FAQ, below.

GM LS Engines

• Terminator MPFI Fuel Injection (Featuring HP or Dominator ECU)
• Terminator TBI Fuel Injection (Featuring HP or Dominator ECU)
• Terminator X for LS1 & LS6
• Terminator X for LS2/3 and '07+ 4.8, 5.3, 6.0 Truck Engines
• Terminator X for 97-'07 4.8, 5.3, and 6.0 Truck Engine

Ford Engines

• Terminator X for 2011-2012 Coyote Engine
• Terminator X for 2013-2015 Coyote Engine
• Terminator X for 2015.5-2017 Coyote Engine
• Terminator X for Modular 4.6 & 5.4 Engine
• Terminator X for 302, Windsor, and Big Block Engine

Dodge Engines

• Terminator X for Gen3 Hemi Engine

Universal Engine Applications*

• Terminator TBI Fuel Injection (Featuring HP or Dominator ECU)
• Terminator Stealth TBI Fuel Injection (Featuring HP or Dominator ECU)
• Terminator X Stealth TBI Fuel Injection (Featuring Terminator X or X-Max ECU)
• Dual Quad (2x4) Terminator Systems
• Dual Quad (2x4) Terminator Upgrades for existing Terminator TBI installations
• Terminator X MPFI Fuel Injection

• *4, 6, or 8 Cylinder Even-Fire Four Stroke Engine

Terminator Frequently Asked Questions

Holley's decision to classify a broad range of their EFI systems under the Terminator name does invite confusion.  We try to offer some answers!

Q: What is the difference between Terminator and Terminator X?

A: The EFI Systems that fall under the name "Terminator" all include either one of Holley's HP or Dominator ECUs.  The EFI Systems that fall under the name "Terminator X" include either the Terminator X or Terminator X Max ECU.  This PDF will show you the detailed differences between all four ECU's.

Q: What kind of EFI systems are included in Terminator X?

A: All of the Terminator X EFI Systems come with the harnesses and connectors intended to run a multi-point fuel injection (MPFI--one injector per cylinder) on a specific engine.  You can buy these for GM LS and Truck engines, Ford Coyote, Modular, and other V8 engines, as well as for universal applications.

Q: What kind of EFI systems are included in Terminator?

A: This question is a bit more complex to answer.  Terminator LS MPFI is the system that birthed the idea of Terminator X and is essentially a Terminator X system but with the HP or Dominator ECU.   (The Dominator ECU is included in those systems that include transmission or drive-by-wire control.)

However, there is more to the Terminator family.  Terminator TBI and Terminator Stealth TBI systems are throttle-body injection systems, meaning the fuel injectors are included in the carburetor-looking throttle body that sits on a 4150 carburetor intake manifold.  The Terminator Stealth TBI differs from the Terminator TBI in that the throttle body itself offers a "stealthy" looking throttle body that resembles a Holley Double-Pumper Carburetor.

Then, just because they could, Holley offered the Terminator LS TBI, which is a throttle-body based EFI System much like the Terminator TBI but is specifically for LS engines.

Q: Who should consider buying a Terminator X EFI System?

A: This is a GREAT choice for someone who is swapping one of these newer engines into an older chassis, or who is upgrading a carbureted engine to MPFI and needs to stay within a budget.  You'll give up some features that are available in a EFI System that uses one of the HP or Dominator ECUs but mostly these are features that only appeal to quite high-end users. Again, consult this chart for details.

Q: Which Terminator / Terminator X EFI System is right for me?

A: You may have looked in the list above and realized that there are more than one choice that could apply to your situation.  Or the sight of so many choices may simply be making your head swim.  No worries--that's why we're here!  Contact Us and let us know what you're trying to accomplish and we'll be glad to walk you though the options and help you make the best choice.