Terminator X EFI for GM GEN V LT4
This EFI System is specific to the LT4 version of GM's GEN V LT family of engines.
Holley also offers a Terminator X system specific to the LT1.
What's Terminator X?
Holley's Terminator X family of EFI Systems are standalone engine management systems that closely replicate some of Holley's most advanced engine management systems but at a much more budget-friendly price. This PDF gives a highly detailed comparison of the Terminator X and X Max to engines built using the Holley HP and Dominator ECUs. To summarize, Holley was able to leave out some features found to be less-necessary by the majority of users and, in doing do, slash the price of a full-featured EFI System by half. If you're switching your carbureted engine to multi-point EFI or are swapping a fuel-injected engine into your ride and need to stay on a budget, this is the EFI system for you.
Here are some of the features that are included in each Terminator X kit:
- Eight High-Impedance Injector Drivers
- Configuration, monitoring and data logging via included 3.5-inch touchscreen LCD display
- Configuration and monitoring via Terminator PC software (free download) and optional CAN-to-USB adapter cable
- Four configurable inputs and outputs
- Boost Control*
- Single-Stage Progressive Nitrous Control*
- Staging Assist*
- Transmission Controls**
- Drive-By-Wire Control**
- *Requires hardware not included with Terminator X system to implement
- **X Max Version Only
Different Terminator X EFI Systems For Different Applications
Yes, there are quite a few different Terminator X MPFI Systems--over 100 with more on the way. All Terminator X systems include either a Terminator X or Terminator X Max ECU. The Terminator X Max ECU provides connectivity for transmission control and drive-by-wire harnesses and is included only in those kits that require one or both of these features. Both ECUs include an on-board 1-BAR MAP sensor or you can add an external MAP sensor for boosted applications. On-Board Diagnostic LEDs display the status of ECU Power, Engine Run, Wideband Status, TPS Calibration, Crank Signal, and Cam Signal
In addition to the ECU the kit all Terminator X / X-Max systems include the following:
- ECU Power Harness
- Application-Specific Main Harness
- 3.5-inch Touchscreen LCD Display with Setup Wizard app
- Custom 4-input / 4-output harness pre-configured for two Electric Fans, A/C Kick, and A/C Shutdown
- Bosch LSU 4.9 Wideband O2 Sensor
Unique To The Terminator X MPFI Kit for GM GEN V LT4 Engines
Holley provides many features unique to the GM GEN V LT Engine that make this EFI system a breeze to install and configure and powerful to operate.
- Direct-fit connectors for factory sensors and injectors
- Connector for factory ignition coil sub-harness
- Controller for GM Gen V LT Variable Valve Timing (VVT) and Gasoline Direct Injection (GDI) control
- Transmission harness for GM 6L80E and 6L90E transmissions*
- Drive-By-Wire harness for GM LT DBW throttle body*
- *Transmission Control Versions Only
- *Drive-By-Wire Control Versions Only
Choose From Different Versions of the Terminator X MPFI Kit for GM Gen V LT4 Engines
Part Number | Manuf. | Engine / Fuel Pr Sensor | ECU | Transmission Control* | Drive-By-Wire Control** |
---|---|---|---|---|---|
550-1623 | GM | Gen V LT4 / Early (4-Pin) | X Max | No | GM LT |
550-1633-6 | GM | Gen V LT4 / Early (4-Pin) | X Max | Yes | GM LT |
550-1624 | GM | Gen V LT4 / Late (3-Pin) | X Max | No | GM LT |
550-1634-6 | GM | Gen V LT4 / Late (3-Pin) | X Max | Yes | GM LT |
- *GM 4L60E(Pre 2009) through 4L80E Transmissions. Contact us if you have another.
- **DBW throttle body and pedal not included.
What Else Will I Need?
Required: EFI Fuel System with
- EFI Fuel Pump (Many great options here)
- Pre- and Post-Pump Filters
- Fuel Pressure Regulator
- Associated Hose, Hose Ends, Clamps, Adapters, Etc.
Recommended:
- Fuel Pressure Gauge or
- Fuel Pressure Transducer
- CAN-to-USB Adapter Harness (for laptop tuning. Download Terminator X Software here.)
- CAN Bus Y-Cable
Not Sure? Review this product documentation before you buy!
Quickstart Manual
Holley Terminator X and X Max EFI Systems
Tuning Manual
Holley Terminator X and X Max EFI Systems
Installation Manual
Holley Terminator X and X Max EFI Systems for GM LS & Truck Engines
Wiring Diagram
Holley Wiring Harness for GM LS1, LS6, and 97-07 Truck Engine
ECU | |
Boost Control | Yes (Requires Additional Hardware) |
DIS Outputs | Eight |
Family | Terminator X |
Fueling Strategy | Speed Density, Alpha-N, or Combination |
Includes Power Harness | Yes |
Injector Drivers | Eight High Impedance |
Internal Datalogging | 4GB |
Nitrous Control | Yes (Requires Additional Hardware) |
Number of Cylinders | Eight |
User Configurable I/O | Yes |
User-Selectable MAP Storage | No |
Water-Methanol Control | No |
Displays And Controllers | |
Auto Brightness | No |
CAN Bus Capable | Yes (Specific to Holley ECUs Only) |
Case/Bezel Finish | Black |
Configurable | Monitor dozens of pre-configured metrics provided by the ECU, including sensors, air/fuel ratio, switched outputs, drive-by-wire data, and more. |
Data Logging | Yes |
Display Type | LCD |
Functions | Setup, Monitor, Tuning |
Gauge/Display Size | 3.5 Inch Rectangular |
Internal Storage | Yes (SD Card) |
Touchscreen | Yes |
Harnesses | |
Harness Type | Power Harness, Main Harness, Injector Sub-Harness, I/O Harness, Ignition Adapter. Transmission Harness (Transmission Control Version Only), DBW Harness (DBW Control Version Only) |
Terminated | Yes |
Crank Timing | |
Sensor Harness Included | Direct-Fit Connector to Factory Crank Timing Pickup |
Sensors | |
Type | ECU-mounted 1 BAR MAP, Wideband O2 |
General | |
Also Included | GM Gen V LT Variable Valve Timing (VVT) and Gasoline Direct Injection (GDI) Control |
Application | GM GEN V LT41 Engines (Early and Late) |
Emission Code | 3 - This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. |
Unit of Sale | Kit |