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The Terminator X Stealth 4150 1250HP EFI system from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction applications. The Terminator X ECU is capable of fuel map self-le...

The Terminator X Stealth 4150 2x4 EFI systems from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 1500 HP naturally aspirated or 1250 HP on forced induction applications. The Terminator X ECU is capable of fuel map self-lea...

Holley EFI Terminator X Max GM Gen V LT4 Direct Injection KitTake control of your GM Gen V LT4, LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete control of you...

Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Ho...

Introducing Terminator X Max Kits for the Modular Ford engine and the 1998 and newer Ford 4R70W or 4R75W Transmission. These new kits will plug and play with either 2V or 4V Mod Motors commonly found in 1996-2004 Mustangs, 1996-2004 Crown Victoria...

This 3.5" Touch Screen LCD Handheld Controller gives you access to a wide range of tuning options. Additionally this display can be used as a fully customizable data monitor! With this 3.5" display your system vitals can be viewed with a quick gla...

Retrofit Regulator Kit. Replace or install a regulator in your Holley Retrofit Fuel Pump ModuleFeatures: Fits Holley fuel pump modules Retrofit kit Includes (3) pieces Follow installation instructions for proper fitment Specs: Brand: Holley EFI ...

This wiring kit is intended to fully populate all of the inputs and outputs for part numbers 553-111 and 553-112 Pro Dashes. These can easily be inserted into the existing 34 pin dash connector. It contains loose wires and 2 and 3 conductor cable ...

Specifically designed for use with the Holley 8.2" SBF Hi-Ram intake manifold, this compact unit shares all of the same great features of our other Holley EFI Dual Sync distributors. The design includes dual Hall Effect sensors for the crankshaft ...

2009+ Gen III Hemi engines rolled off the showroom floor with Variable Valve Timing (VVT). Now, both Terminator X and Terminator X Max ECUs will allow you to control and tune the VVT with the use of the plug and play VVT harness.Features: Plug and...

2009+ Gen III Hemi engines rolled off the showroom floor with Variable Valve Timing (VVT). Now, both Terminator X and Terminator X Max ECUs will allow you to control and tune the VVT with the use of the plug and play VVT harness. The fun does not ...

These Holley EFI Smart Coils are a bolt-in ignition upgrade for your late model HEMI or Coyote engine. Here's the difference over a stock coil, they produce more spark energy while consuming less power without sacrificing voltage output. This mean...

This direct fit fuel pump module will drop directly into any 1988-1998 GM C/K Series truck EFI fuel tank. The module has been designed with a 340 LPH (liters per hour) Sniper fuel pump that will support up to 700 EFI or 900 Carbureted horsepower (...

Introducing the latest addition to the Holley EFI Product Lineup! Our EV6 unterminated injector harness is perfect for anyone wanting to add EV6 injectors to their engine bay.This harness kit comes with everything you need to build a custom cut to...

Introducing the next generation of Holley EFI Dual Sync Distributors, the new design features an improved shutter wheel, high-quality dual Hall Effect sensors, and an MSD cap and rotor!While these distributors are designed to be used primarily in ...

Holley EFI bypass fuel pressure regulator kits are part of a complete line of fuel system products from Holley. The included 12-882 EFI Fuel Regulator features a die cast aluminum body and a chrome finish for corrosion resistance and clean appeara...

Holley EFI universal bypass fuel pressure regulators are for use with fuel systems in street or track applications. They feature adjustable base pressure from 15-90 psi, a gauge port, and a boost reference port as well. The regulators are ideal fo...

Holley EFI Billet Blank Distributor Replacement Cap for 565-111 or any 565-200 series Dual Sync Distributors.Features:Designed to work on 565-111 or any 565-200 series Dual Sync Distributors.Specs: Brand: Holley EFI Category: Ignition Color: Bl...

The EFI Hi-Ram manifold line has a new addition for the 351W Ford application. This manifold comes with a 105MM LS throttle body flange top, a 95mm LS throttle body top is also available. The runner length and tapered cross section design will per...

HI-RAM 105MM Cast aluminum Side Mount Plenum Top for EFI Hi-Ram ManifoldsHolley now has cast aluminum plenum top options for those of us with limited room in the front of our engine bays. The cast aluminum side mount plenum tops resemble the older...

Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley EFI ...

HEI Adapter HarnessSpecs: Brand: Holley EFI Category: Ignition Emission Code: 3 Harness Application: GM Harness Type: Ignition Part Type: Ignition Harness Product Type: Ignition Harnesses Sub Category: Ignition Wire and Related Components ...

Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley EFI ...

Plug and play Holley EFI alternator harnesses for late model engines with Pulse Width Modulated alternators. This includes most 2007+ GM engines and most 2005+ Ford engines.Features: Plug and play with Holley EFI and Terminator X main harnesses 20...