Holley Terminator X EFI Kit For 58X Crank 4X Cam And EV6 Injector LS2/ LS3



  • Loaded With Base Tunes
  • Full Range of Features
  • Plug And Play Install
  • Boost and Nitrous Support
MSRP $1,778.00
You save 10%

Holley Terminator X EFI Kit for LS2 and LS3 engines with 58X Crank 4X Cam And EV6 Injectors.

If you’re converting your classic to run an LS engine, the Terminator X EFI Kit (550-918) from Holley removes guesswork and adds functionality! With all the diagnostic and tuning features you could ask for, this kit helps you get the most out of your engine.

Features and Benefits:
· Real-Time fuel map learn
- Safely powers most Stock and Holley EFI LS Injectors
- 4L60E or 4L80E transmission control
- Boost and Nitrous Control
- Advanced Tables
- On-Board Diagnostic LEDS
- 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

Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X Max comes fully loaded with base maps for common LS engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X MAX has the features and technology you need at a price that won't break the bank!

This Kit Includes: 58x/4x 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 - and assorted vacuum adapters.

California Residents: Proposition 65 Warning

Vehicle Fitment

This product will fit the following Bronco years:

This product will fit the following C10 years:

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:

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