Skip to main content
Holley EFI

Holley EFI 550-822 Avenger EFI Stealth Ram System - Polished

Part # 550-822 Be the first to write a review

Compatible with Small Block Chevrolet with 1995 and earlier heads, Single Plane, 36 lb per hour injectors, Range Up to 500 HP, Polished

Read More

Holley EFI 550-822 Avenger EFI Stealth Ram System - Polished

Not Available

You're sure to get some attention when you pop the hood and show an Avenger Stealth Ram&trade: Multi-Port EFI system! Available for traditional or Vortec headed SB Chevys, the Avenger's self-tuning capabilities make it as easy as 1, 2, 3 to get your car up and running with EFI. The tunnel ram design of the Stealth Ram&trade: builds power in the upper RPM range while maintaining excellent mid-range torque as well. Avenger Stealth Ram&trade: 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 the 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
UPC090127667026
Manufacturer Part Number550-822
Part Number550-822
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 550-822
Instructions for Part# 550-822
Instructions for Handheld
Additional Instructions for Part# 550-822
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.

Have a question about this product?

    Load More
    Reviews

      Your Review

      *Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

      Some parts are not legal for use in California or other states with similar regulations.