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Holley EFI

Holley EFI 550-816 Avenger EFI 4bbl Multi-Port Fuel Injection System

Part # 550-816 Be the first to write a review

Compatible with Small Block Chevrolet with Vortec Heads, Single Plane, 36 lb per hour injectors, Range Up To 500 HP

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Holley EFI 550-816 Avenger EFI 4bbl Multi-Port Fuel Injection System

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Avenger Multi-Port EFI systems for small or big block Chevys are ready for the street or strip with the simple swap of an intake! Whether you have a stock engine, crate or custom-built engine, Avenger Multi-Port systems can help you maximize performance and the Avenger's self-tuning capabilities will get you to the cruise or race in no time. Avenger Multi-Port systems include: intake manifold, billet throttle body, ECU, wiring harness, fuel rails, injectors, fuel pump and related small parts. Set up is done on the included hand-held tuner so no laptop is required!

Features:

  • Self-tuning fueling strategy tunes while you drive - Designed for the user that wants ease of use without having to be a “tuning expert”
  • Requires no laptop computer to set up or tune - Includes full color OLED hand-held tuner that offers simple setup and easy tuning of basic parameters such as engine idle speed. Still allows for users to change other parameters to further fine tune base
  • Dedicated fuel and oil pressure inputs
  • Allows for computer controlled ignition timing if desired
  • System can be upgraded in the future to a Holley “HP EFI System” if desired
Brand Holley EFI
Emission Code3
Product TypeMulti-Port Fuel Injection Systems
UPC090127666999
Manufacturer Part Number550-816
Part Number550-816
3

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

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

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
Addendum for 550-816
Instructions for 550-816
Instructions for Handheld
All Avenger EFI systems come with all installation components including wiring harness, sensors and in-line pump. Return fuel line to tank is not included.<br><br>ECU is certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance.<br><br>These kits require the use of a small diameter distributor, such as a small cap GM HEI or most MSD distributors. A large cap GM HEI will not fit with these kits.
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    Some parts are not legal for use in California or other states with similar regulations.