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Holley EFI

Terminator X Fox Body Mustang 5.0 EFI Kit

Complete EFI Swap Kit for your Fox Body Mustang with a 302 cubic inch, 5.0L, engine. Includes an engine-specific Main Harness, Ford Spaced EV1 Injector Harness, a Terminator X ECU, and a user-friendly 3.5 in. Touchscreen handheld.

Part # 550-937F
5 Reviews
Estimated shipping date: 12/22/2021
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$1,231.95
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$1,369.00
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Take control of your 302ci Small Block Ford engine in your Fox Body Mustang with Holley EFI Terminator X system! Don't settle for the factory ECU with a cumbersome tuning interface or pre-programmed tuning chip 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, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 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 V8 Ford 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. 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 a budget beater or a boosted race car, Terminator X has the features and technology you need at a price that won't break the bank!

Features:

  • Plug and Play with 1987-1993 Fox Body Mustangs, powered by the factory 302ci Small Block Ford, with the stock TFI Distributor
  • This Kit contains an ECU Mounting Bracket - TFI Ignition Adapter - a Fox Body specific engine main harness, as well as MAT and CTS sensors
  • Includes EV1 Injector Harness, which will directly replace the old, brittle, factory Ford Injector harness
  • High Impedance Injector Drivers will safely power most Stock injectors, and Holley EFI Injectors
  • All of the new Terminator X systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control
  • Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths) –
  • For Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector pre-terminated.
  • Plug and play ignition capability with Dual Sync and HyperSpark Distributors, adapter 558-323 required for HyperSpark Distributors for those of you wanting to upgrade your ignition system.
  • The included 3.5" Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any Ford V8 engine.
  • Additionally the handheld provides internal data-logging and a fully customizable gauge display.
  • 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
  • 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
  • On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal – Cam Signal, allowing you to identify any Critical engine issues at a glance
  • 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, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
  • The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!
  • Plug and play compatible with more Holley EFI accessories such as; analog style gauges, shift lights, various modules, 12.3" digital dash support!
  • Free EFI Tuning Software for complete control of your Terminator X power plant

About Holley EFI

Holley is the new standard in EFI! Whether you're engine swapping your classic car or need to manage 4000 horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever!

Brand Holley EFI
Emission Code4
EngineSmall Block Ford
Ignition TypeFord TFI
Injector ConnectorJetronic / Minitimer (Bosch)
Product TypeTerminator X Ford MPFI Kit
UPC090127074343
Part Number550-937F
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Holley EFI Dealers
Do you need a custom kit built for your application? Do you need a system installed and tuned? Click here to find the Holley EFI dealer in your area!
Terminator X ECU's are designed to be mounted with the LED's facing up. When paired with a Digital Dash in the stock gauge bezel, you will need CAN adapter P/N 558-425

Detailed Fox Body Mustang Wiring Guide

Terminator X Fox Body Mustang Sensors and Wiring Overview

The Ultimate Boosted Fox Body Terminator X Installation with a MSD Pro 600 Ignition!

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