Gauges and Displays
Holley EFI V5
Dual Sync Distributors
Water Meth Kits and Components
Fuel Injection Components
Power Pack Kits
DFI and service parts
Pro-Jection and Commander 950 Service Parts
Quick Fuel Injection
Tech & Support
Tech & Support Documents
Browse our technical documentation and downloads for information on Holley EFI.
Watch out instructional videos on Holley EFI.
Frequently Asked Questions
Be sure and visit our frequently asked questions section for quick answers.
Update Holley EFI Software
Learn how to download and update your Holley EFI software.
Certified Holley EFI Dealers
Do you need a custom kit built for your application? Do you need a system installed and tuned? Click here to find the Certified Holley EFI dealer in your area! (All Certified EFI Dealers are factory trained.)
About Holley Fuel Injection
Holley is quickly becoming The New Standard In EFI! Holley’s HP ECU is standard equipment on the 2013-2016 Chevrolet COPO Camaro and Holley’s EFI throttle body powers every NASCAR Sprint Cup Series™ team. As of 2016 Holley EFI is also used to control every NHRA Pro Stock car that goes down the strip! 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!