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Our HyperSpark kits were designed to make upgrading your ignition on a Sniper 1 EFI equipped engine simple. When installed along with a new Sniper 1 EFI system, the combination creates the easiest conversion to install on the market, with only fou...

Main Harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart CoilsSpecs: Brand: Holley EFI Category: Ignition Emission Code: 4 Harness Application: Ford Harness Type: Main Part Type: Ignition Harness...

The Sniper EFI remote IAC (Idle Air Control) and plug is designed to gain installation clearance on some Sniper EFI 2x4 installations. With select intake manifolds, the distributor housing and IAC valve on the back of the Sniper EFI throttle body ...

Terminator X fuel injectors are dynamic flow matched within 1%, resulting in extremely precision and consistent injector characteristics. These injectors provide excellent linearity with no discernible "bounce" at low pulse widths as commonly foun...

These Stealth throttle bodies do not include injectors as they're designed to be used on MPFI intake manifolds.Features: 4150 flange 950 CFM throttle body Included is a GM TPS Sensor Black color Specs: Adjustable: Yes Brand: Holley EFI Category...

Get all the great features of Terminator self-tuning EFI in a bolt-on system for GM's popular LS engines! The 550-613 kit controls fuel, spark, drive-by-wire and 4L60/4L80E transmissions through the Terminator's new 3.5" touchscreen! Install, answ...

If your HEMI swap project is using a Chrysler 46RE Transmission, commonly found in 1996-2003 Dodge Ram Dakota or Durango V8 trucks, you can finally control your transmission through the Terminator X Max ECU. The 46RE has a mechanically controlled ...

Holley EFI 160lb/hr Flow Matched Fuel Injectors feature a precision lapped disc valve, high-quality brass windings, and high-temp O-rings. These injectors provide excellent linearity with no discernible "bounce" at low pulse widths as commonly fou...

Expand your EFI Live AutoCal with this Tune Package, engineered for GM Duramax trucks. Perfect for adding another vehicle to your existing AutoCal, this package provides custom tune files and optional SOTF (Shift-On-The-Fly) switch for real-time c...

Universal Ford V8 Harness Kit for Holley HP and Dominator ECU'sFeatures: Harness Kit Includes: Main Power Harness, Universal MPFI Main Harness, Ford V-8 Injector Harness, Ignition Adapter & Tach Input Simple Installation Can be used with HP or...

PN 558-420 contains 5 extra input/output wires that the base Terminator EFI harness does not contain. It contains Input wires for Inputs 1-4. It contains one wire for Output 2. These inputs and outputs can perform features and functions that must ...

Single Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS7 cylinder heads.Designed with a 4150 Square bore flange. Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance ...

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full pot...

The Sniper EFI Sealing Plate comes with two gaskets and the sealing plate, designed to eliminate any air turbulence between your throttle body and intake manifold. This turbulence generally presents itself in the form of a whistling noise.Features...

Holley continues to push the envelope of intake design with its latest offering. The unique look of this intake will surely stand out from the crowd!Our latest release of fabricated "Dual Plenum" intake manifolds for GM LS1/2/6 and LS3/L92 engines...

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...