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Holley EFI 550-1422 Terminator X Max ECU Kit for 2007-2012 Gen III HEMI

Manufacturer

Picture for manufacturer Holley EFI

Part Number

550-1422
7 reviews
Sale Price

$2,399.95

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

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Fitment guaranteed

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Product Details

The Holley EFI Terminator X Max is a comprehensive standalone engine management system specifically designed for 2007-2012 Gen III HEMI engines, including 5.7L, 6.1L, and 6.4L applications with factory Drive-by-Wire (DBW) throttle bodies. This plug-and-play kit provides complete control over your HEMI powerplant with no custom tuning required to get started.

Complete Kit Includes:

  • Compact ECU (7.45" x 4.1" x 1.66") with on-board diagnostic LEDs for easy troubleshooting
  • 3.5" color touchscreen handheld controller with internal data-logging and custom gauge displays
  • Bosch LSU 4.9 wideband O2 sensors for precise air/fuel ratio monitoring
  • EV1 injector harness for factory or aftermarket fuel injectors
  • Vacuum hose adapters (1/8", 3/16", and 1/4" sizes)
  • FREE Holley EFI tuning software for Windows-based tuning and calibration

Advanced Features:

  • Integrated boost control with multiple strategies including boost vs. time, gear, RPM, and speed with safety limiters
  • Nitrous control with support for wet or dry systems, progressive staging, and closed-loop AFR targeting
  • Four configurable inputs (12v, ground, 5v, and frequency) for pressure sensors, nitrous activation, trans brake, or other triggers
  • Extensive table options including four 1D tables, one 1D gear table, four 2D tables, and one 2D gear table for unlimited tuning flexibility
  • Calibration wizard walks you through building base tunes quickly and efficiently

The compact ECU design allows mounting virtually anywhere in the engine bay or cabin, though diagnostic LEDs must face upward for visibility. This system is designed for non-VVT Gen III HEMI engines only and provides professional-grade engine management at an affordable price point.

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

Yes

Dry Nitrous Control

Yes

e85 Support

Yes

EGT Support

Yes

Emission Code

3

Engine

Gen III Hemi

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

Yes

Idle Air Control Motor Included

No

Ignition Timing Control

Yes

Individual Cylinder Fuel Corrections

Yes

Injector Connector

Jetronic / Minitimer (Bosch)

Intake Manifold Included

No

Knock Retard Support

Yes

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

Year Range

2007-2012

Very fair pricing delivery was as promised

Great price and shipped fast. Will be installing unit this week.

I Called and asked basic question but was told I can not be helped and was referred to sales, which was closed or out of office. I emailed sales and received zero response. Not what I expected.

Easily found what I was looking for.

shipping was fast and I received exactly what I ordered

Great prices and quick service.

Everything was great. Shipping was fast and the price was lower than everywhere else.

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