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Holley EFI 550-1221 Terminator X Engine Management System Ford Modular 2V/4V

Manufacturer

Picture for manufacturer Holley EFI

Part Number

550-1221
9 reviews
Sale Price

$2,049.95

2 left at this price

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Usually delivered within 2 days

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Product Details

The Holley EFI Terminator X Engine Management System is a plug-and-play standalone ECU designed specifically for Ford Modular engines, including 4.6L and 5.4L variants with 2-valve or 4-valve configurations. This comprehensive kit provides complete engine control for coil-on-plug applications, making it ideal for swaps, resto-mods, and performance builds.

Complete System Includes:

  • Terminator X ECU with on-board diagnostic LEDs for monitoring ECU power, engine run status, TPS calibration, cam signal, and other critical parameters at a glance
  • EV6 injector harness for modern high-flow fuel injector compatibility
  • Dual Bosch LSU 4.9 wideband oxygen sensors for accurate air/fuel ratio monitoring and precise tuning control
  • USB dongle for initial laptop setup and tuning
  • Vacuum hose adapters in 1/8", 3/16", and 1/4" sizes
  • FREE Holley EFI tuning software for complete control of your engine parameters

Advanced Features:

  • Boost Control: Comprehensive boost management including boost vs. time, boost vs. gear, boost vs. RPM, boost vs. speed, and multiple boost safety parameters
  • Nitrous Control: Two dedicated nitrous channels supporting wet or dry systems, progressive or non-progressive stages, rich/lean safety limits, and target closed-loop AFR control
  • Advanced Tables: Includes four 1D tables, one 1D gear table, four 2D tables, and one 2D gear table for nearly unlimited tuning configuration options
  • Four Auxiliary Inputs: 12V, ground, 5V, and frequency inputs for sensors, activation triggers, nitrous activation, trans brake, and other accessories

Technical Specifications:

  • Designed for coil-on-plug applications (ignition components do not plug-and-play with coil banks found on 1996-1998 applications)
  • High impedance injector drivers compatible with Holley EFI and most stock injectors (will not support low impedance injectors—consult injector support chart in instructions)
  • Compatible with Ford Modular 4.6L 2V/4V and 5.4L 2V/4V engines

The Terminator X system eliminates the complexity of standalone engine management with true plug-and-play functionality, allowing you to focus on tuning and performance rather than wiring and integration.

Products specifications

Accelerometer Support

Yes

Boost Control

Yes

Brand

Holley EFI

CAN-BUS Support

Yes

Category

Air and Fuel Delivery

Coil Per Cylinder Ignition Support

Yes

Datalogging Support

Yes

Distributor Included

No

Drive-By-Wire

No

Dry Nitrous Control

Yes

e85 Support

Yes

EGT Support

Yes

Emission Code

3

Engine

Ford Mod Motor

Forced Induction Support

Yes

Fuel Filter Included

No

Fuel Hose Included

No

Fuel Injectors Included

No

Fuel Pressure Regulator Included

No

Fuel Pump Included

No

Grade Type

Performance

Handheld Included

No

Idle Air Control Motor Included

No

Ignition Coil Type

Smart

Ignition Timing Control

Yes

Individual Cylinder Fuel Corrections

Yes

Injector Connector

USCAR (EV6)

Intake Manifold Included

No

Knock Retard Support

Yes

MAP Sensor

1bar

Mounting Hardware Included

No

Multi-Stage Nitrous Control

Yes

Part Type

Fuel Injection System

Product Type

EFI System

Progressive Nitrous Control

Yes

Self-Tuning

Yes

Sub Category

Fuel Injection System and Related Components

Throttle Position Sensor Included

No

Transmission

None

User-Tuneable

Yes

Warning

California Proposition 65

Wet Nitrous Control

Yes

My product came on time and in excellent condition. I couldn't have asked for more.

Quick and easy

shipping was fast and I received exactly what I ordered

had the product of interest in stcok and avilable for quick shipment

Super easy and fast

Rims shipped in a timely fashion and arrived when they said they would

Good prices, easy ordering.

Great prices and quick service.

great people there thumbs up

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