Sale

Air and Fuel› Fuel Injection Systems and Components - Electronic

Holley

TERM X MAX, GEN3 HEMI, EARLY, EV1, DBW

$2,587.95 $2,399.95 Save $188.00

SKU: H00E 550-1420

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Holley EFI Terminator X Max EFI System is a comprehensive engine management solution designed specifically for Chrysler Gen III HEMI engines from 2003 to 2006, including the 5.7L, 6.1L, and 6.4L variants equipped with the factory Drive-by-Wire (DBW) throttle body. Tailored for non-VVT (non-variable valve timing) applications, this system delivers precise fuel and ignition control, enabling enthusiasts and professional tuners to optimize engine performance with ease. It offers a plug-and-play installation with advanced features such as real-time fuel learning, integrated sensors, and multiple programmable inputs and outputs. Its intuitive 3.5" touchscreen handheld controller and free Holley EFI software make tuning accessible for both beginners and experienced users.
Show original supplier description

Part #: 550-1420

Introducing Terminator X and X Max Kits for Chrysler GEN III HEMI engines from 2003-2013+ such as the 5.7L, 6.1L and 6.4L engines with the factory Drive-by-Wire throttle body. (Non-VVT only)

Features:

  • Plug and play Chrysler GEN III Hemi control - 2003-2006 Engines such as the 5.7L, 6.1L and 6.4L engines utilizing the factory DBW (Drive by Wire) throttle body. (Non-VVT only)
  • Plug and Play compatible with Holley EFI accessories - Analog gauges, shift lights, modules, and both 6.86" and 12.3" Pro Dash
  • EV1 injector harness included
  • High Impedance Injector drivers power Holley EFI and most stock injectors - Injector support chart found in instructions (will not support low impedance injectors)
  • Included Bosch LSU 4.9 wideband O2 sensors for accurate readings and precise tuning control
  • Built in 1bar MAP (manifold absolute pressure) sensor included - For Boosted applications - internal MAP sensor can be disabled and utilize external MAP sensor harness (kit includes a terminated connector for seamless installation)
  • Vacuum hose adapters included - (1/8", ┬╝", and 3/16" sizes)
  • 4 inputs - 12v, Ground, 5v, and frequency for items like pressure sensors, activation triggers, nitrous activation, or trans brake
  • Boost Control - boost vs. time, boost vs. gear, boost vs. RPM, boost vs. speed, and boost safeties
  • Nitrous Control - channels for wet or dry, progressive or non-progressive, rich/lean safeties, and target closed loop AFR (Air/Fuel Ratio)
  • Advanced Tables - (4x 1D tables, 1x 1D gear table, 4x 2D table, and 1x 2D gear tables) for nearly unlimited table configuration options
  • On-board diagnostic LEDS - ECU power, engine run, TPS calibration, cam signal, and more! Identify critical engine parameters at a glance
  • 3.5" touchscreen handheld included - Internal data-logging, custom gauge display, and calibration wizard allow quick building bases tunes for any Domestic V8 engine
  • Compact ECU (Engine Control Unit) - At only 7.45" x 4.1" x 1.66" the compact packaging allows mounting virtually anywhere. REMINDER: diagnostic LED's must face up!
  • FREE EFI Tuning software - For compete control of your Terminator X power plant

EV1 Injectors - Drive-by-Wire Throttle Body Control

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHolley
Part NumberH00E 550-1420
Weight8.0 lb

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy