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1964-1987 El Camino Holley EFI Terminator X Mpfi, LS1 - EV1 Injectors with 3.5 in Touchscreen 550-903

Ground Up Part #: HOL-550-903

Manufacturer Part #: 550-903

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Part Details Vehicle Fitment Reviews
Take control of your LS engine with Holley EFI Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price! Holley EFI Terminator X 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. Holley EFI Terminator X 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 IN 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, Holley EFI Terminator X has the features and technology you need at a price that won't break the bank!

Features:

  • For GM LS1/LS6 engines with 24x crank reluctor - with EV1 Injectors.
  • Real-Time fuel map learn, takes the guess work out of tuning your base fuel table.
  • High Impedance Injector Drivers will safely power most Stock LS injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)
  • All of the new Holley EFI Terminator X systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
  • On-Board 1bar MAP sensor, is perfect for N/A or Nitrous engine combos. If your combination requires a 2+Bar, we recommend GM 12592525, and our adapter part number 558-416.
  • MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)
  • 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
  • Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
  • Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
  • Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
  • On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glance
  • The included 3.5 IN Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any LS engine. Additionally the handheld provides internal data-logging and a fully customizable gauge display.
  • The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!
  • Plug and play compatible with more Holley EFI accessories such as; analog style gauges, shift lights, various modules, and coming soon, 12.3" digital dash support!
  • Free EFI Tuning Software for complete control of your Holley EFI Terminator X power plant
  • Includes: 24x LS Engine Main Harness - EV1 Injector Harness - Holley EFI Terminator X ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/Output Harness - and assorted vacuum adapters.

Manufacturer Part Number : 550-903

warning WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Emissions
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
Brand
Brand Logo Holley EFI
Additional Information
  • SS396.com Part #: HOL-550-903
  • Brand: Holley EFI
  • Manufacturer Part #: 550-903
  • Sold As: Kits
  • Shipping Details: This item ships Ground.
Vehicle Fitment
Make Model Year Body Style
Chevrolet El Camino 1964 -
Chevrolet El Camino 1965 -
Chevrolet El Camino 1966 -
Chevrolet El Camino 1967 -
Chevrolet El Camino 1968 -
Chevrolet El Camino 1969 -
Chevrolet El Camino 1970 -
Chevrolet El Camino 1971 -
Chevrolet El Camino 1972 -
Chevrolet El Camino 1973 -
Chevrolet El Camino 1974 -
Chevrolet El Camino 1975 -
Chevrolet El Camino 1976 -
Chevrolet El Camino 1977 -
Chevrolet El Camino 1978 -
Chevrolet El Camino 1979 -
Chevrolet El Camino 1980 -
Chevrolet El Camino 1981 -
Chevrolet El Camino 1982 -
Chevrolet El Camino 1983 -
Chevrolet El Camino 1984 -
Chevrolet El Camino 1985 -
Chevrolet El Camino 1986 -
Chevrolet El Camino 1987 -
Installation Time
Installation Time: Info Unavailable
Installation Difficulty
Installation Difficulty: Info Unavailable

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