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Holley EFI Tech & Support

New & Hot Holley EFI Parts
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Terminator X Software
1 Products
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Holley EFI
Terminator X Max GM 6L80/90 Transmission Kits
$499.00
Part# 558-499
Holley EFI
ULTRA LO-RAM FORD COYOTE BLACK
$799.95
Part# 300-912BK
Holley EFI
ULTRA LO-RAM FORD COYOTE
$799.95
Part# 300-912
Holley EFI
ULTRA LO-RAM FORD COYOTE BLACK
$799.95
Part# 300-911BK
Holley EFI
ULTRA LO-RAM FORD COYOTE
$799.95
Part# 300-911
Holley EFI News
Tech, Features, News and Videos
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2023 LS Fest WestHolley EFIls swapped dragster
LS Fest West 2023: LS Swapped 1967 Twin Turbo Slingshot Dragster
Jeremy Stoermer
06/01/2023
Video
holley efi12-1 crank trigger kitspark timing
Holley EFI 12-1 Crank Trigger Kits - The Best Way To Get Accurate Spark Timing
Ray Frescas
05/17/2023
Video
1955 chevy bel air6 second chevy bel airalex taylor 55 chevy
PRI Show 2022: From Junk to 205 MPH In Six Seconds - Alex and Dennis Taylor's 1955 Chevy Bel Air
Jeremy Stoermer
05/12/2023
Video
Holley EFIIntake ManifoldLo-Ram
Give Your 2011-2023 Ford More Breathing Room With Holley's Hi-Ram And Ultra Lo-Ram Coyote Manifolds
Ray Frescas
05/05/2023
Video
Holley EFITerminator X Max6L80E
Holley EFI 6L80/6L90E Transmission Controller for Terminator X MAX!
Holley Video Team
04/27/2023
Video
Holley EFIHP EFITerminator EFI
Adding Additional Inputs And Outputs Is Easy With Holley EFI's CAN Input/Output Module
Jeff Smith
03/27/2023
tech
Lights Out 13Drag Racingdatsun
Keep 'Em Guessing: This Small-Tire Datsun 1200 Dares To Be Different
Bradley Iger
03/23/2023
features
Sniper EFIHolley Sniper EFI 4150 2x4Super Sniper
Holley Sniper EFI 4150 Dual Quads
Ray Frescas
03/21/2023
10 min read
Video
LS SwapGM LSTerminator X Max
How to Swap an LS Engine Into Your 1967-1972 GM C10 Truck With A Holley Swap Kit
Todd Ryden
03/15/2023
10 min read
tech

About Holley EFI

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™ 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 hot rod 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!