EFI System Archives - Engine Builder Magazine
Open Loop/Closed Loop and Learning

Closed-loop control can be programmed to either add or subtract up to a certain percentage of fuel in order for the engine to reach the target air/fuel ratio.

Reviewing Holley’s Terminator X EFI System

As part of our small block Ford build, we decided to use Holley’s Terminator X EFI system for plug and play Ford V8 engine control. Chris Wright of Pro Car Associates and Greg Jones of Engine Builder review all that the Terminator X offers and why Holley has been a leader in this product category.

Holley Dominator EFI Kits

Holley Dominator EFI kits are available for variety of popular applications, such as LS kits with and without drive-by-wire and transmission control and several universal kits for conventional pushrod Ford and Chevrolet engines. These Dominator EFI base kits provide nearly limitless room for growth and expandability. They feature options such as integrated electronic transmission control,

Holley EFI Kit
Holley EFI Coyote and Gen III Hemi Smart Coils

Holley EFI Smart Coils are a bolt-in ignition upgrade for your late-model Ford Coyote or Mopar Gen III Hemi engine. Compared to a stock coil, they produce more spark energy while consuming less power without sacrificing voltage output. This means you get a hotter spark at the plug to burn the maximum amount of fuel

Holley EFI
Holley EFI Lightweight Dominator ECU

Holley EFI’s new Lightweight Dominator ECU utilizes a lighter potting material than the standard Dominator unit, which reduces total weight by 1.8 pounds.  This lightweight version is specifically intended for drag racing. It is not recommended for use in high-heat conditions (under-hood mounting installations), and applications with high continuous current draw. Features: Lightweight ECU potting

Holley Dominator EFI
Holley EFI Terminator X Stealth 4500 2×4 Kits and Service Parts

The Terminator X ECU is designed to fit with Gen 3 Ultra Dominator air cleaners and fuel crossovers, allowing you to easily convert your 4500 equipped 800+ horsepower dragster or door car!

Holley EFI
The EFI Tuning Evolution

Much of the acceptance of EFI has been due to aftermarket companies making them more user-friendly.

Terminator X Stealth 4500 EFI System

The Terminator X Stealth 4500 EFI system can support up to 1,500 horsepower naturally aspirated or 1,250 horsepower on forced induction applications.

Electronic Fuel Injection for the Masses

There’s no way to sugar coat it. Unless you’ve got a rock-solid niche business in building vintage engines, chances are you’ll need to become an expert with EFI products and how to tune engines with these systems.

FAST 2020 EFI Training Courses

2 Classes! May 8th & October 16th The perfect course for those considering a switch from carburetors to EFI. Curriculum includes basic terminology, component overview and installation fundamentals for both EZ-EFI and XFI. The class features a live demonstration of an XFI Sportsman system where students get the opportunity to see a system from the first

Edelbrock Performer-Plus Camshaft for EFI Systems

Edelbrock now offers a new Performer-Plus camshaft for use with throttle-body style Electronic Fuel Injection systems on a small-block Chevrolet. Edelbrock Performer-Plus camshafts feature profiles that deliver a major improvement in throttle response and torque from off-idle to 5,500 rpm.

Edelbrock E-Street Electronic Fuel Injection System

The E-Street EFI System is intended as an affordable, easy to use, fuel injection solution that can be installed on any V8 engine, originally equipped with a carburetor. The Edelbrock E-Street EFI System includes a pre-assembled throttle body, engine control unit (ECU), 7″ touch screen tablet PC, high quality wiring harness, wide band O2 sensor and instructions for a hassle free installation.