Take control of your GM LS1/LS6 engine with Terminator X Max. This self-learning EFI system pairs real-time fuel-learn strategies with high-impedance injector drivers, an integrated 1-bar MAP sensor, and four programmable inputs and outputs for electric fans, boost control solenoids, progressive nitrous control, and more. Part number 550-929 adds Drive-By-Wire throttle body control, and the kit ships loaded with base maps for common LS combinations so you can get out of the garage fast.
Key Features:
- Built for GM LS1/LS6 engines with a 24x crank reluctor, Drive-By-Wire throttle body, and EV1 injectors
- Real-time fuel map learn takes the guesswork out of tuning the base fuel table
- High-impedance injector drivers safely power most stock LS and Holley EFI injectors (does not control low-impedance injectors)
- Includes Bosch LSU 4.9 wideband oxygen sensor for accurate AFR feedback and precise tuning control
- On-board 1-bar MAP sensor, ideal for naturally aspirated or nitrous combinations (2+ bar combos need GM 12592525 with adapter 558-416)
- MAP sensor vacuum hose adapters included (1/8", 1/4", and 3/16")
- 4 inputs (12V, ground, 5V, frequency) for extra sensors or activation triggers such as nitrous or a trans-brake
- 4 outputs (ground, PWM-) for fans, boost control, nitrous control, or an IAC kit
- Boost control strategies: Boost vs. Time, Boost vs. Gear, Boost vs. RPM, Boost vs. Speed, and Boost Safeties
- Nitrous control: single channel wet or dry, progressive or non-progressive, with rich/lean safeties and target closed-loop AFR
- Advanced tables: four 1D tables, one 1D-per-gear table, four 2D tables, and one 2D-per-gear table for custom logic like flex-fuel offset or fuel/oil pressure safeties
- On-board diagnostic LEDs cover ECU power, engine run, wideband status, TPS calibration, crank signal, and cam signal
- Included 3.5" touchscreen handheld provides a calibration wizard, internal data logging, and a customizable gauge display
- Compact ECU mounts virtually anywhere as long as the diagnostic LEDs face up
- Plug-and-play compatible with Holley EFI gauges, shift lights, and digital/pro dashes (P/N 553-106, 553-111, 553-112)
- Free EFI tuning software included for full laptop-level control
Specifications:
- Engine/Platform: GM LS1/LS2/LS6
- Crank Reluctor: 24x, 1x cam
- Injector Connector: Jetronic/Minitimer (Bosch EV1)
- Drive-By-Wire: Yes
- Transmission Control: None
- MAP Sensor: 1-bar, integrated
- Handheld Included: Yes, 3.5" touchscreen
- Includes: 24x LS main harness, EV1 injector harness, DBW throttle body harness, Terminator X Max ECU, ECU main power harness, Bosch LSU 4.9 wideband oxygen sensor, input/output harness, and assorted vacuum adapters
- Recommended Pedal: P/N 10379038
- Part Number: 550-929
Terminator X ECUs must be mounted with the LEDs facing up. This kit is designed to work with GM throttle body P/Ns 12570790 and 12580760 and GM throttle pedal P/N 10379038. The ECU is not recommended for marine applications but can be used off-road as long as it's mounted in a dry, protected location away from heat with proper wiring management.
FAQ
What engines is Terminator X Max 550-929 built for?
It's built for GM LS1/LS6 engines with a 24x crank reluctor, EV1 injectors, and Drive-By-Wire throttle body control.
Does this kit include a handheld tuner?
Yes, it includes a 3.5" touchscreen handheld with a calibration wizard, internal data logging, and a customizable gauge display.
Can it control low-impedance injectors?
No, the high-impedance injector drivers safely power most stock LS and Holley EFI injectors but will not control low-impedance injectors.
What MAP sensor range does the on-board sensor support?
The integrated MAP sensor is 1-bar, which is ideal for naturally aspirated or nitrous combinations; boosted 2+ bar applications require GM sensor 12592525 with Holley adapter 558-416.
How should the ECU be mounted?
Terminator X ECUs must be mounted with the diagnostic LEDs facing up, in a dry, protected location away from heat.
Is this ECU approved for marine use?
No, it's not recommended for marine applications, though it can be used in off-road applications with proper protection and wiring management.
