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Description
Holley EFI Terminator X - Foxbody Mustang 5.0 EFI Kit 550-937FTake 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 an entry price. Terminator X features real time fuel learn, high impedance injector drivers, an integrated
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 an entry price. Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1 Bar MAP sensor, and four programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and more options for your application. Terminator X comes fully loaded with base maps for common Ford V8 engine combinations to get you out of the garage and on the road/track fast. The 3.5" LCD handheld touch screen 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 to maximize your application.
Features:
- Plug and Play with 1987-1993 Fox Body Mustangs powered by the factory 302ci Small Block Ford with the stock TFI Distributor
- Contains an ECU Mounting Bracket, TFI ignition adapter, Fox Body specific engine main harness, MAT, and CTS sensors
- Includes a EV1 Injector Harness which will directly replace your factory Ford injector harness
- High impedance injector drivers will safely power most stock injectors and Holley EFI Injectors
- Utilizes the Bosch LSU 4.9 wideband sensor to relay AFR information to the ECU for accurate reading and precise tuning control
- Built in 1 Bar MAP Sensor with vacuum hose adapters included (3/16, 1/8, and 1/4)
- Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector terminated, making the install
- Plug and plug ignition capability with Dual Sync and HyperSpark Distributors
- 4 inputs include 12V, ground, 5V, and frequency, for additional pressure sensors, activation triggers for nitrous activation, transmission brake, and more
- 4 outputs include Ground and PWM- for accessories like fans, boost control, nitrous control, IAC, and more
- Boost Control Ð Boost vs. Time, Boost vs. Gear, Boost vs. RPM, Boost vs. Speed, Boost Safeties
- Nitrous Control Ð Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
- Advanced Tables Ð 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
- On-Board Diagnostic LED's for ECU Power, Engine Run, Wideband Status, TPS Calibration, Crank Signal, and Cam Signal, allowing you to identify any critical engine issues at a glance
- Compact ECU design allows you to mount it virtually anywhere (LED's must face up)
- 3.5" LCD handheld touch screen contains a calibration wizard that allows you to quickly build a base tune for any domestic V8 engines
- Handheld provides internal data logging and a fully customizable gauge display
- Free EFI tuning software for complete control of your Terminator X
About Holley EFI
Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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★★★★★ 5
Soft shirt
Color: Light Blue, Size: X-Large
Extraordinarily soft. The fit is perfect.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Comfortable
Color: Claret, Size: XX-Large
The most comfortable, cool shirt I ever owned.
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Reviewed in the United States on May 15, 2026
★★★★★ 4
runs a bit small
Color: Ocean Blue, Size: Large
lightweight, comfortable. However, I needed to return and by one size larger. I wanted it it for a comfy - nighttime- like PJ's kind of fit.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfortable and Pretty
Color: Claret, Size: Small
Nice cut for a t-shirt and I love the color. Bought for a trip to Asia, it's soft and comfy. It dried overnight in 80% humidity after washing. I was looking for natural fibers that is quick drying.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Very nice
Color: Ocean Blue, Size: Medium
Soft breathable. Fit true to size. Washed nice
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Reviewed in the United States on March 28, 2026