Holley EFI Kit Terminator X Ford 302W/ 351W/ 460



  • Real-Time Fuel Learning
  • Onboard Diagnostics Tool
  • 3.5" LCD Screen
  • Made in the USA
MSRP $1,548.00
You save 10%

Holley Terminator X EFI Kit for Ford 302W, 351W and 460 Engines.

Unlock powerful settings with Holley's Terminator X EFI Kit (550-937) to get the most horsepower out of your ride. Especially when compared to the restrictive, non-adjustable factory ECU, this upgrade features a variety of adjustable functions that are better suited to your Ford 302W, 351W or 460 engine.

Features and Benefits:
- Plug-and-Play Design for Ford 302W, 351W and460 Engines
- LSU 4.9 Wideband Oxygen Sensor by Bosch
- Built-In 1 Bar MAP Sensor
- Four inputs: 12v, Ground, 5v and Frequency
- Boost Control and Nitrous Control
- Advanced tables
- 3.5in LCD Display Screen with On-Board Diagnostics
- Proudly Manufactured in the USA! 

In addition to real-time fuel learning, the Terminator X features a 1 bar MAP sensor and four programmable inputs and outputs. These inputs and outputs are ideal for running electric fans, boost control, nitrous control and so much more! 

Kit Includes:
- Terminator EFI ECU
- Terminator Hand-Held Controller
- Main Power Harness
- Injector Harness
- Input/Output Harness
- Can Power Harness
- Can Extension Harness
- Wideband Oxygen Sensor
- Oxygen Sensor Weld-in Bung
- Installation Instructions

Easily access these features and settings with the included 3.5-inch handheld LCD touchscreen. Using the Calibration Wizard, you can set up a base tune for your Ford 302W, 351W or 460 engine in no time. The LCD screen is a highly useful resource that also serves as an onboard diagnostic tool for engine status, wideband, TPS calibration, crank signal and cam signal.

Vehicle Fitment:
- 302w/351w/460 Ford Engines

The Terminator X is proudly made in the USA for quality assurance. Installation is plug-and-play for your Ford 302W, 351W or 460 engine. In addition, you can achieve plug-and-play ignition capability when using Dual Sync and Hyperspark Distributors. 

California Residents: Proposition 65 Warning

Note: This item is not CARB (California Air Resource Board) exempt and is not legal for sale or use in the state of California.

Installation Difficulty


Advanced skill is required for this installation.

Vehicle Fitment

This product will fit the following Mustang years:

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