550-1425 Terminator X Max MPFI Controller Kit

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HOLLEYPART NUMBER: 510-550-1425

550-1425 Terminator X Max MPFI Controller Kit

Name: 550-1425 Terminator X Max MPFI Controller Kit
Brand: HOLLEY
SKU: 510-550-1425
Price: 2399.95 USD
Availability: InStock

^$2,399⁹⁵

4 left in stock

Ships on Oct 19, 2026

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Mopar
HEMI Gen. III

Terminator X Max MPFI Controller Kit

2013-Newer Gen III HEMI Engines Non-VVT

DBW Throttle Bodies

EV6 Injector Harness

Tune Using Included 3.500 in. Handheld Touchscreen

Holley 550-1425 Terminator X Max MPFI Controller Kit Features:

Plug-and-play engine control for 2013-Newer Gen III HEMI Engines Non-VVT

For drive-by-wire DBW) throttle bodies

Injector harness for EV6 injectors - USCAR connector-type

High Impedance Injector Drivers safely power most stock injectors and Holley EFI injectors

Bosch LSU 4.9 wideband oxygen sensor (O2) for accurate readings and precise tuning control

Built-in 1bar manifold absolute pressure (MAP) sensor for boosted applications - the internal sensor can be disabled to run an external MAP sensor (not included) with terminated harness and connector (included)

1/8 (.125) in., 1/4 (.250) in., and 3/16 (.1875) in. vacuum hose adapters included

4 Inputs - 12 V, ground, 5 V, and frequency can be used for activation triggers, trans brake, and to add extra pressure sensors

Boost Controls - Ability to control boost vs time, boost vs. gear, boost vs. RPM, boost vs. speed, boost vs. safeties

Nitrous Controls - Single Channel Wet or Dry, Progressive or Non-Progressive, rich/lean safeties, and target closed-loop AFR

Advance Tables - 4x 1D table, 1x 1D gear table, 4x 2D table, 1x 2D per gear table - can be used for custom tables with unlimited configurations

On-board Multi-Color LED Diagnostic - Allows quick troubleshooting on critical issues for ECU power, engine running, wideband status, TPS calibration, crank signal, cam signal

A 3.500 in. LCD touchscreen provides easy base tuning with the calibration wizard along with gauge displays and data logging

The compact ECU (7.450 in. x 4.100 in. x 1.660 in.) can be mounted virtually anywhere

Free software tuning/downloads for complete control and staying up-to-date

Note:

The ECU's diagnostic LED’s must be installed facing upwards

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Standalone Engine Management Systems

Holley EFI has delivered the Terminator X and Terminator X Max standalone engine management systems (EMS) for swappers to take full control of their fuel-injected or multi-point fuel injected (MPFI) engines. Terminator X systems design is a simple plug-and-play unit incorporating self-learning technologies without needing any tuning interfaces, which is often required when using a factory power-train control module (PCM). Terminator X kits offer engine control, while Terminator X Max kits offer both engine and transmission control. Power adders such as nitrous and boost can easily be handled with custom settings and features, making these Terminator X kits ideal street and strip ECMs.

Part TypeEngine Control Module

Product LineHolley EFI Terminator X & Terminator X Max MPFI Controllers

BrandHOLLEY

Package Height9.5

Package Width12.25

Package Length14.0

Weight9.0 PG

Part CategoryPerformance Parts

Wiring Harness IncludedYes

Wire Connectors IncludedYes

Housing FinishBlack

Housing MaterialPlastic