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Holley Terminator X MAX Engine Management Systems 550-1420 Systems, MAX, 8-EV1 Injectors, 8-Coils, Drive-by-Wire, 3.5 in. Controller, Chrysler, Dodge, 5.7L, 6.1L, Non-VVT, Kit

SKU: HLY550-1420

Engine Management Systems

Holley Terminator X MAX Engine Management Systems 550-1420 Systems, MAX, 8-EV1 Injectors, 8-Coils, Drive-by-Wire, 3.5 in. Controller, Chrysler, Dodge, 5.7L, 6.1L, Non-VVT, Kit

SKU: HLY550-1420

Engine Management Systems
A$5,003.98
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 MAX engine management systems let you take control of your domestic V8 engine. They 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 MAX 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. Also, Holley offers the X MAX systems with either or both drive-by-wire (DBW) throttle body control or transmission control. All kits come fully loaded with base maps for common domestic V8 engine combinations to get you out of the garage and onto the road or track fast. Order the model recommended for your vehicle application.

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, and 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 can be used for any custom tables
* 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 V8 engines, as well as tuning and gauge display functions

Part Type

Engine Management Systems

Data: v4.2 - Upd: 2026-10-13 18:46:52

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
550-1420
Product Attributes - Part Type
Engine Management Systems
Product Attributes - Product Line
Holley Terminator X MAX Engine Management Systems
Product Attributes - UPC
090127088043
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 - Ignition Coil Connector
Hemi 3-pin
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
Yes
Product Attributes - Drive-By-Wire Channels
1
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 - Reluctor Wheel Tooth Quantity
32
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
Includes 3.5 inch display. Cannot program through EFI Standalone Digital Dash Kits.
Product Attributes - Special Attention
Not for use with VVT. Requires EV1 injectors.

Reference Information

Brand Name/s Holley
StreetFX SKU hly550-1420
SFX Item ID 4784354
Supplier Item Code 4784354
Manufacturer SKU 550-1420
Manufacturer UPC 90127088043
Alternative References HOL550-1420, 8-EV1, 8-Coils, 5.7L, 6.1L

Compatibility

Application Data
  • UniversalNo
    MakeCHRYSLER
    Beginning Year2005
    Ending Year2006
    Engine TypeV8
    Engine FamilyMopar Hemi Gen III
    Engine Size5.7L/345
    TransmissionAutomatic
  • UniversalNo
    MakeCHRYSLER
    Beginning Year2005
    Ending Year2006
    Engine TypeV8
    Engine FamilyMopar Hemi Gen III
    Engine Size6.1L/370
    TransmissionAutomatic
  • UniversalNo
    MakeDODGE
    Beginning Year2003
    Ending Year2006
    Engine TypeV8
    Engine FamilyMopar Hemi Gen III
    Engine Size5.7L/345
    TransmissionAutomatic
  • UniversalNo
    MakeDODGE
    Beginning Year2006
    Ending Year2006
    Engine TypeV8
    Engine FamilyMopar Hemi Gen III
    Engine Size6.1L/370
    TransmissionAutomatic

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