These standalone Terminator X ECUs are intended as service or replacement components for an existing Terminator X EFI installation. The Terminator X ECU delivers real-time fuel learn, high-impedance injector drivers, a built-in 1 Bar MAP sensor, and 4 programmable inputs and outputs for accessories such as electric fans, boost control solenoids, or progressive nitrous control. The Terminator X Max variant adds electronic transmission control and drive-by-wire throttle body control on top of the same core feature set.
Key Features:
- OEM injector support, with part numbers provided in the handheld wizard or software
- Genuine Bosch LSU 4.9 wideband control (not compatible with LSU 4.2 oxygen sensors)
- 8 built-in multi-color diagnostic LEDs for quickly identifying issues such as a failed TPS autoset, faulty crank/cam sensors, or oxygen sensor problems
- Built-in 1 Bar MAP sensor; can be disabled in favor of an external MAP sensor for boosted applications
- 4 inputs — 12V, ground, 5V, and frequency — for pressure sensors, nitrous activation, or trans-brake triggers
- 4 outputs — ground, PWM — for fans, boost control, nitrous control, IAC kits, and more
- Boost control: boost vs. time, gear, RPM, speed, plus boost safeties
- Nitrous control: single channel wet or dry, progressive or non-progressive, rich/lean safeties, closed-loop AFR target
- Advanced tuning 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 the Terminator X system
- Terminator X Max adds integrated electronic transmission control (GM 4L60E/4L80E, Ford AODE/4R70W)
- Terminator X Max adds integrated drive-by-wire throttle body control
Specifications:
- Application: Compatible with Terminator X harnesses
- Engine/Platform, Crank/Cam Wheel & Injector Connector: Not vehicle-specific — this is a bare replacement/service ECU, so these specs are determined by whichever Terminator X wiring harness and kit it's installed into, not by the ECU itself
- Throttle Control & Transmission Control: This part number is the base Terminator X service ECU (fuel and spark control only, no DBW throttle body control or transmission control); those features require pairing with a Terminator X Max harness/kit instead
- MAP Sensor: Built-in 1 Bar (external optional for boosted applications)
- Oxygen Sensor: Genuine Bosch LSU 4.9 wideband
- Inputs/Outputs: 4 programmable inputs, 4 programmable outputs
- Recommended Use: Not recommended for marine applications; suitable for off-road use with a dry, heat-protected mounting location
- Part Number: 554-152
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
Is this a complete Terminator X kit or just the ECU?
This is the standalone service ECU, intended to replace or service the ECU in an existing Terminator X EFI installation.
What's the difference between Terminator X and Terminator X Max?
Terminator X Max adds electronic transmission control and drive-by-wire throttle body control on top of the base Terminator X feature set.
What oxygen sensor does this ECU use?
A genuine Bosch LSU 4.9 wideband oxygen sensor; it will not work with LSU 4.2 sensors.
Can this ECU be used in a boat?
No, it's not recommended for marine applications, though it can be used off-road in a safe, dry, heat-protected location.
Is this legal for street use?
No. It's legal for sale and use only on Racing Use Only vehicles — competition vehicles that are not registered and never operated on the street. It cannot legally be installed on an emissions-controlled vehicle.
