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Holley EFI 550-516 Sniper EFI Self-Tuning Kit

6857155 - 550-516

4 Barrel Fuel Inj. Conversion - 800 CFM - Dual Bolt Pattern - 58.5 psi Fuel Pressure - 3.28 in. H - 650 HP Max - Classic Gold Finish

550-516 Sniper EFI Self-Tuning Kit Holley EFI

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Holley EFI - Sniper EFI Self-Tuning Kit - Part#: 550-516 Features:

  • Designed To Fit 4150 Flange and Spread Bore Manifolds
  • Throttle Body Mounted ECU - No Extra Boxes To Mount
  • Supports Up To 550 HP w/Four 100 lb/hr. Injectors
  • 4 Wiring Connection Required -Battery +/- / Switched Ignition/RPM
  • Internal Fuel Pressure Regulator
  • Integrated Ignition Timing Control and Coil Drive
  • High Res. Full Color Touchscreen For Initial Setup/Tuning/Display
  • Simple Calibration Wizard - No Laptop Required
  • Self-Tuning ECU Me

View the Full List of Automotive Applications »

Below is an abbreviated list of applications for the Sniper EFI Self-Tuning Kit.


Holley is quickly becoming The New Standard In EFI! Holley's HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley's EFI throttle body powers every NASCAR Sprint Cup Series(TM) team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All Star race. But that's not all. The world's best street machine builders and tuners are making the switch to Holley EFI. Builders like Dave Lane who used Holley EFI to power the 2013 Goodguys Hot Rod of the Year and tuners like Steve Morris who use it to build some of the baddest forced induction beasts on the planet. It's the easiest, most refined, feature-rich system that money can buy. But, don't take our word for it, see what the best are saying about Holley EFI!

Shipping Information

  • Item Requires Shipping
  • 9.0 lbs.
  • W11.0000” x H8.0000” x L12.2500”

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