Terminator X Max brings complete engine control to any V8 with a universal MPFI harness, replacing a factory ECU's cumbersome tuning interface with real-time fuel learn, self-learning fuel strategies, and Holley's proven EFI tuning technology, plus GM 4L60E/4L80E transmission control.
Key Features:
- Universal MPFI main harness for common V8 engine combinations
- GM 4L60E/4L80E transmission control included
- EV1-style injector connectors
- Real-time fuel map learn takes the guesswork out of tuning the base fuel table
- High-impedance injector drivers safely power most stock and Holley EFI injectors
- Bosch LSU 4.9 wideband oxygen sensor included for accurate AFR reading and tuning control
- On-board 1-bar MAP sensor, ideal for N/A or nitrous combinations
- 4 programmable inputs and 4 programmable outputs for fans, boost control, nitrous, and more
- 3.5 in. touchscreen handheld with calibration wizard, internal data logging, and customizable gauge display
- Compact ECU mounts virtually anywhere
- Plug-and-play compatible with Holley EFI gauges, shift lights, modules, and digital/pro dashes
- Free EFI tuning software for full laptop access
Specifications:
- Engine/Platform: Universal — fits common V8 engine combinations via a universal MPFI main harness, not a specific factory/LS-style harness
- Ignition Type: Universal
- Injector Connector: Jetronic/Minitimer (Bosch EV1)
- MAP Sensor: 1-bar
- Transmission Control: 4L60E/4L80E
- Handheld Included: Yes, 3.5 in. touchscreen
- Part Number: 550-942
Not compatible with 4L6X transmissions from model year 1995 or earlier due to converter lockup and downshift strategy changes. Not intended for marine use, though it can be used off-road with proper mounting and wiring protection.
FAQ
What kind of engine is 550-942 designed for?
It's a universal MPFI kit built for common V8 engine combinations, not a specific factory harness like the LS-specific Terminator X Max kits.
Does it include transmission control?
Yes, GM 4L60E/4L80E transmission control is included.
Is a handheld tuner included?
Yes, a 3.5 in. touchscreen handheld with a calibration wizard.
What injector connector does it use?
Jetronic/Minitimer (Bosch EV1) style connectors.
