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Holley Terminator X Engine Management Systems 550-937 Systems, X, Multi-Port, 8-EV1 Injectors, 8-Coils, Analog Input, Sensors, Tuner, Universal MPFI Main Harness, Kit

SKU: HLY550-937

Engine Management Systems

Holley Terminator X Engine Management Systems 550-937 Systems, X, Multi-Port, 8-EV1 Injectors, 8-Coils, Analog Input, Sensors, Tuner, Universal MPFI Main Harness, Kit

SKU: HLY550-937

Engine Management Systems
A$3,401.19
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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Description

Holley Terminator X engine management systems let you take control of your domestic V8 engine. These kits give you complete charge of your engine and self-learning fuel strategies, along with the proven, race-winning technology of Holley EFI—all at a budget-friendly price! Every MPFI Terminator X features real-time fuel learn, high impedance injector drivers, an integrated one-bar MAP sensor—and four programmable inputs and outputs, ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. All systems come fully loaded with base maps for common engine combinations to get you out of the garage and onto the road or track fast.

Features include:

* Holley EFI industry-leading, easy-to-use software suite allows full laptop access for advanced users
* Real-time fuel map learn—takes the guesswork out of tuning your base fuel table
* High-impedance injector drivers will safely power most standard injectors and Holley EFI injectors. (Will not control low-impedance injectors)
* Bosch LSU 4.9 wideband relays AFR information to the ECU for accurate reading and precise tuning control
* On-board one-bar MAP sensor is perfect for N/A or nitrous engine combos
* MAP sensor vacuum hose adapters
* 4 inputs: 12 V, ground, 5 V, and frequency
* 4 outputs: Ground, PWM for accessories
* Boost control: boost vs. time, boost vs. gear, boost vs. rpm, boost vs. speed, and boost safeties
* Nitrous control: single channel of wet or dry, progressive or non-progressive, rich/lean safeties, and target closed loop AFR; adjustable through touch screen
* Advanced tables: 4 x 1D tables, 1 x 1D per gear table, 4 x 2D tables, 1 x 2D per gear table
* On-board diagnostic LEDs allow you to identify any critical engine issues at a glance
* 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
* Available with or without a 3.5 in. touch screen LCD hand-held with easy-to-use calibration wizard; allows you to quickly build a base tune for most domestic V8 engines, as well as tuning and gauge display functions (not available with every kit)

Part Type

Terminator X Ford MPFI Kit

Data: v4.2 - Upd: 2026-10-13 18:47:42

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
550-937
Product Attributes - Part Type
Engine Management Systems
Product Attributes - Product Line
Holley Terminator X Engine Management Systems
Product Attributes - UPC
090127074336
Product Attributes - Transmission Controller Included
No
Product Attributes - Boost Control
Yes
Product Attributes - Traction Control
No
Product Attributes - High Impedence Injectors
Up to 8
Product Attributes - Fuel Injector Connector Style
Jetronic/Minitimer/EV1
Product Attributes - Coils
Up to 8
Product Attributes - Analog Inputs
4
Product Attributes - Wideband Controller
Yes
Product Attributes - Wideband Channels
1
Product Attributes - CANBUS Enabled
Yes
Product Attributes - CANBUS Networks
1
Product Attributes - Knock Control
Yes
Product Attributes - Knock Channels
2
Product Attributes - Drive-By-Wire Capable
No
Product Attributes - VVT Control
No
Product Attributes - Nitrous Control
Yes
Product Attributes - Launch Control
No
Product Attributes - Engine Protection
Yes
Product Attributes - Flex Fuel Compatible
Yes
Product Attributes - Multi-fuel Capable
No
Product Attributes - Data Logger
Yes
Product Attributes - Oxygen Sensor Included
Yes
Product Attributes - Display Included
Yes
Product Attributes - Handheld Controller Included
Yes
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
To use E85 fuel a flex fuel sensor must be purchased. The injector harness has Ford V8 injector spacing with EV1 injector connectors. The Terminator X is compatible with flex fuel but will require a flex fuel sensor and will use an input. The Terminator X is capable of knock control but does not include knock sensors. Supercharged or turbocharged engines will need to purchase a compatible MAP sensor. This kit does not operate variable valve timing (VVT) or displacement on demand (DOD) systems.

Reference Information

Brand Name/s Holley
StreetFX SKU hly550-937
SFX Item ID 4782924
Supplier Item Code 4782924
Manufacturer SKU 550-937
Manufacturer UPC 90127074336
Alternative References HOL550-937, 8-EV1, 8-Coils

Compatibility

Application Data
  • Application NotesTo use E85 fuel a flex fuel sensor must be purchased. The injector harness has Ford V8 injector spacing with EV1 injector connectors. The Terminator X is compatible with flex fuel but will require a flex fuel sensor and will use an input. The Terminator X is capable of knock control but does not include knock sensors. Supercharged or turbocharged engines will need to purchase a compatible MAP sensor. This kit does not operate variable valve timing (VVT) or displacement on demand (DOD) systems.
    Beginning Year1968
    Ending Year2001
    Engine FamilyFord small block Windsor
    Engine Size5.0L/302
    Engine TypeV8
    MakeFORD
    TransmissionManual
    UniversalNo
  • Application NotesTo use E85 fuel a flex fuel sensor must be purchased. The injector harness has Ford V8 injector spacing with EV1 injector connectors. The Terminator X is compatible with flex fuel but will require a flex fuel sensor and will use an input. The Terminator X is capable of knock control but does not include knock sensors. Supercharged or turbocharged engines will need to purchase a compatible MAP sensor. This kit does not operate variable valve timing (VVT) or displacement on demand (DOD) systems.
    Beginning Year1969
    Ending Year1997
    Engine FamilyFord small block Windsor
    Engine Size5.8L/351
    Engine TypeV8
    MakeFORD
    TransmissionManual
    UniversalNo
  • Application NotesTo use E85 fuel a flex fuel sensor must be purchased. The injector harness has Ford V8 injector spacing with EV1 injector connectors. The Terminator X is compatible with flex fuel but will require a flex fuel sensor and will use an input. The Terminator X is capable of knock control but does not include knock sensors. Supercharged or turbocharged engines will need to purchase a compatible MAP sensor. This kit does not operate variable valve timing (VVT) or displacement on demand (DOD) systems.
    Beginning Year1972
    Ending Year1997
    Engine FamilyFord big block 385 Series
    Engine Size7.5L/460
    Engine TypeV8
    MakeFORD
    TransmissionManual
    UniversalNo

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