PCM Flash Programmers / EFI Engine Management

Plug and play for Holley Avenger, Terminator X, HP, and Dominator ECU fuel and oil pressure inputs. 1/8" NPTFeatures:•Plug and play for both fuel and oil pressure inputs with Holley EFI systems•Stainless steel construction•Comes with...

The Holley EFI 5-inch Digital Dash comes out of the box, ready to plug and play with your Gen 1 Sniper EFI, Terminator X or X MAX, and Holley EFI Dominator or HP ECU. The 5-inch digital touch screen display is pre-loaded with 3 easy to read layouts...

This 3.5" Touch Screen LCD Handheld Controller gives you access to a wide range of tuning options. Additionally this display can be used as a fully customizable data monitor! With this 3.5" display your system vitals can be viewed with a quick glance!...

Replacement Holley EFI NTK Wide band Oxygen sensor. This sensor is a direct replacement for Holley HP, Dominator, Avenger and Terminator EFI systems. Each Sensor is hand calibrated to insure accurate readings when used in conjunction with your Holley EFI...

Replacement Holley EFI, Bosch Wide Band Oxygen Sensor.This sensor is a direct replacement for Holley HP, Dominator, Avenger and Terminator EFI systems. Each Sensor is hand calibrated to insure accurate readings when used in conjunction with your Holley...

The eight channel coil driver module is a "dumb coil" driver module that plugs into the main harness, which is needed when running the factory coils. Contains two 4-channel drivers, requires on an eight cylinder engine. Eight channel Works with...

Have you been searching for a reason to discard your old noisy mechanical speedometer cable? If so, the Holley GPS Module for our 7" Digital displays should be the next addition to your project vehicle. Featuring a simple plug and play installation, this...

Holley EFI ECU mounting brackets, allowing you to safely mount your ECU under the seat of a Foxbody Mustang. Easy Installation of Holley HP, Terminator X, or Terminator X Max ECU in Your Mustang Fits all 79-04 passenger seat mounting holes (hardware...

Main harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines. For Terminator X, X Max, HP and Dominator EFI systems. (Main engine harness only)

Ford V8 Injector Harness for Ford USCAR / EV6 style Fuel Injectors (Evenly Spaced) Works with Holley EFI systems Terminator X, X Max, HP and Dominator main harnesses. Eliminates the need for injector adapters, just swap injector harnesses and go!

Great for applications requiring minimal Input/output wiring. 4 Output Wires 4 Input Wires Connector J1A/B Inputs/Outputs Auxiliary Harness for Terminator X, HP, and Dominator EFI systems

Used when adding a second wide band oxygen sensor to a Dominator EFI installation. For use with Bosch 4.2 and NTK wideband sensors. Features: J2A Connector #2 Wide band oxygen sensor harness (Fully Terminated) 23 user programmable input wires with...

The CAN to USB communication cable provides the user with real tuning time access to the ECU. This cable can be used with Holley EFI, Sniper EFI, and Terminator X Tuning Software. Which can be downloaded for free from the Support section of our...

This harness is designed for the 1986-1995 Ford 5.0 HO Mass Air Flow EFI engines. You must use the 1989-1993 MAF and Distributor. 1986-1988 must add MAF (mass air flow) sensor. 1994-1995 must modify TPS wiring and change distributor. Harnesses do not...

Easy to install with one touch lever. PVC suction mount arm adjusts vertically and provides 360 degree rotation. 

A TRUE plug and play EFI main harness for your Fox Body Mustang and Holley EFI. This harness is used in the Anderson Gen. 2 Terminator X and HP complete kits. This main harness has all the necessary connectors and loose wire connections to connect...

Bosch 4.9 Wideband O2 Sensor Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X and X Max systems. Anti-Seize pre-applied to sensor threads. Service Oxygen Sensor for Sniper EFI Systems Service Oxygen Sensor for Terminator X...

 An air conditioning specific Wiring kit for 87-93 Mustangs using Holley Terminator X, X Max, HP and Dominator systems. Produced by Fathead Garage. A simple to wire up and easy to install wiring kit that has all the appropriate connections to add...

Holley 3 Bar MAP sensor for use with Holley Terminator X ECU and Terminator X Max on Foxbody Mustang. Comes with new weatherpak connector to make a direct plug and play or can modify Terminator harness plug for the plastic bosses to fit correctly. For...

The Holley EFI CAN splitter allows you to add an additional CAN device to your Sniper EFI or Terminator X installation, without needing to unplug the handheld. This easy to install CAN splitter simply plugs into the CAN connector on your main harness,...