
TERMINATOR X MAX ECU
Overview
These standalone Terminator X ECUs (Electronic Control Unit) are intended to be used as service components for your Terminator X EFI installation. The Terminator X ECU features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, electronic transmission control, drive-by-wire throttle body control, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, or progressive nitrous control, and much more.
Features:
- OEM (Original Equipment Manufacturer) injectors supported, with part numbers provided in the handheld wizard or software
- Genuine Bosch LSU 4.9 Wideband Control (Will not work with LSU 4.2 Oxygen Sensors)
- 8 Built-in multi-color diagnostic LED's allow you to quickly identify a variety of potential system issues, such as a failed TPS (Throttle Position Sensor) Autoset, faulty crank or cam sensors, or potential oxygen sensor issues
- Built in 1bar MAP (Manifold Air Pressure) sensor. On boosted applications, you can disable the internal MAP sensor, and utilize an external MAP sensor
- 4 Inputs – 12v, Ground, 5v, and Frequency for things such as additional pressure sensors, activation triggers for nitrous activation, or a trans brake (fuel and oil pressure inputs are pre-terminated)
- 4 Outputs – Ground, PWM - for accessories such as fans, boost control, nitrous control, IAC Kit, and more
- GM LS and LT, Ford Coyote, and Mopar Gen V Drive-by Wire Throttle Body Control (Terminator X Max Only)
- GM 4L60 and 4L80, and Ford 4R70W Transmission Control (Terminator X Max Only)
- Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
- Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
- Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table
- Free EFI Tuning Software for complete control of your Terminator X power plant
About Holley EFI

Specs
Brand | Holley EFI |
---|---|
Category | Air and Fuel Delivery |
Emission Code | 4 |
Grade Type | Performance |
Mounting Hardware Included | No |
Mounting Hole Quantity | 4 |
Product Type | ECU |
Removable PROM | No |
UPC | 090127105504 |
Part Number | 554-153 |
Emissions
4
This part is legal for sale or use on Racing Use Only Vehicles
The following vehicles are considered Racing Use Only Vehicles:
- Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
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