Holley EFI Kit Terminator X Max 24X Crank 1X Cam/ EV6 / Trans Control For GM LS1/ LS6 Engines
Highlights
- 4 Outputs – Ground, PWM
- Boost and Nitrous Control
- Advanced Tables
- On-Board Diagnostic LEDS
GM LS1/LS6 Holley Terminator X Max EFI Kit with 4L60E/4L80E Trans Control - works with EV6 style fuel injectors for LS1 and LS6 engines.
These Terminator X Max EFI Kits (550-919) bring the latest LS engine interface, diagnostics, and tuning capabilities to your fingertips. These kits are easy to install, utilize self-learning technology, and are perfect for a wide range of projects - from junkyard swaps to high-budget restomods. Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs.
Features and Benefits:
- Real-Time fuel map learn
- High Impedance Injector Drivers will safely power most LS injectors
- Bosch LSU 4.9 wideband for accurate reading and precise tuning control
- On-Board 1bar MAP sensor is perfect for N/A or Nitrous engine combos
- MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)
- 4 Inputs – 12v, Ground, 5v, and Frequency
- 3.5" Touchscreen Handheld allows you to quickly build a base tune for any LS engine
- The compact ECU size allows you to mount it virtually anywhere
- Plug and play compatible with more Holley EFI accessories
- Free EFI Tuning Software for complete control of your Terminator X power plant
Terminator X Max features a wide range of base tunes to get your engine started, with self-learning to further refine the EFI for your specific engine. A handheld 3.5" LCD touchscreen contains a simple calibration wizard as well as tuning and gauge display functions.
This Holley Terminator X Max EFI Kit includes 4L60E or 4L80E Transmission control.
This Kit Includes:
- 24x LS Engine Main Harness
- EV6 Injector Harness
- 4L60E/4L80E Transmission Control Harness
- Terminator X MAX ECU
- ECU Main Power Harness
- Bosch LSU 4.9 Wideband Oxygen Sensor
- Input/Output Harness
- Assorted vacuum adapters
California Residents: Proposition 65 Warning
Related Categories: Mustang Parts, Mustang Electrical & Wiring, Mustang EFI Engine & Injector Harnesses, Mustang Engine, Ford Bronco Parts
Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:
- 1965 and older U.S. manufactured California certified vehicles
- 1967 and older U.S. manufactured federally certified vehicles

Vehicle Fitment
This product will fit the following Bronco years:
This product will fit the following C/K years:
- 1988,
- 1989,
- 1990,
- 1991,
- 1992,
- 1993,
- 1994,
- 1995,
- 1996,
- 1997,
- 1998,
This product will fit the following C10 years:
- 1960,
- 1961,
- 1962,
- 1963,
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
- 1980,
- 1981,
- 1982,
- 1983,
- 1984,
- 1985,
- 1986,
- 1987,
This product will fit the following F-100 years:
- 1948,
- 1949,
- 1950,
- 1951,
- 1952,
- 1953,
- 1954,
- 1955,
- 1956,
- 1957,
- 1958,
- 1959,
- 1960,
- 1961,
- 1962,
- 1963,
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
This product will fit the following Mustang years: