
Terminator X EFI ECU Kit for Gen III GM LS Truck Multec 2 Injectors No Handheld
Truck Engine 24x Tooth Crank Reluctor
Terminator X is a self-tuning EFI ECU kit for Gen III GM LS 4.8/5.3/6.0 truck engines, tuned over a USB/CAN cable with the free Terminator X software instead of a handheld display.
Holley 550-904T Highlights:
- Fits GM LS 4.8/5.3/6.0 Gen III truck engines.
- 24x crank, 1x cam, Multec 2 injector harness.
- Real-time self-learning fuel with 1-bar MAP sensor.
- Four 12-volt and 5-volt programmable inputs and outputs.
- USB/CAN tuning cable in place of a handheld.
- Bosch LSU 4.9 wideband oxygen sensor included.
Standalone Engine Management Systems
Holley EFI has delivered the Terminator X and Terminator X Max standalone engine management systems (EMS) for swappers to take full control of their fuel-injected or multi-point fuel injected (MPFI) engines. Terminator X systems design is a simple plug-and-play unit incorporating self-learning technologies without needing any tuning interfaces, which is often required when using a factory power-train control module (PCM). Terminator X kits offer engine control, while Terminator X Max kits offer both engine and transmission control. Power adders such as nitrous and boost can easily be handled with custom settings and features, making these Terminator X kits ideal street and strip ECMs.






