Shop Holley Terminator X and Terminator X Max EFI systems, kits, and accessories. Explore options for GM LS and LT, Ford, Gen III Hemi, universal, and Stealth 4-barrel applications. Compare engine management kits, display options, harnesses, and add-ons, including X Max configurations with transmission and drive-by-wire control.

Shop Holley HP EFI systems, ECU and harness kits, and fuel injection accessories. Explore options for GM LS, Ford, GM TPI and Holley Stealth Ram applications, plus universal multi-port injection retrofit kits. Find wiring and components for your engine management upgrade.

Shop Holley Dominator EFI ECUs, fuel injection kits, wiring harnesses and injector driver modules. Explore engine management with electronic transmission control, drive-by-wire throttle control and dual wideband oxygen sensor capability. Find components for your engine and drivetrain combination.

Shop throttle bodies and fuel components for Holley EFI installations. Browse EFI throttle bodies, fuel rails, drive-by-wire pedals, intake elbows, carb hats, adapters and service parts. Find options for GM LS, Gen III Hemi and other applications, and check individual product fitment.