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Sniper EFI Systems

4BBL

  • Supports up to 650hp with Four 100 Lb/Hr Injectors
  • Throttle body mounted ECU – no extra boxes to mount
  • Dual Pattern bolt on carburetor replacement designed to fit 4150 Flange and spreadbore manifolds
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI
  • Integrated ignition timing control & coil driver when used with Hyperspark or MSD Pro-Billet distributors
Shop Sniper EFI

Stealth 4150

  • Modern EFI performance with classic Holley carburetor looks
  • Bolt on 4150 Flange Carburetor Replacement
  • Throttle body mounted ECU – no extra boxes to mount
  • Supports up to 650hp with Four 100 lb/hr Injectors
  • All of the wiring exits below the rear fuel injector cover for a completely stealth installation
  • Only four wiring connections required (Battery +, Battery - , Switched Ignition & RPM)
  • Integrated ignition timing control when used with Hyperspark or MSD Pro-Billet distributors
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI
Shop Sniper EFI Stealth 4150

Stealth 4500

  • Supports up to 1500 naturally aspirated HP or 1250 in forced induction applications with eight 100 lb/jr injectors
  • Compatible with draw-through or blow-through forced induction applications
  • 2.125” throttle plates flow 1440 CFM for large displacement engines
  • Integrated ignition timing control when used with Hyperspark or MSD Pro-Billet distributors
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI
  • Throttle body mounted ECU – no extra boxes to mount
Shop Sniper Stealth 4500

Quadrajet™

  • Designed to deliver the signature Rochester roar at wide open throttle
  • Throttle body mounted ECU – no extra boxes to mount
  • Supports up to 500 horsepower with four 100 lb/hr injectors
  • Only four wiring connections required (Battery +, Battery - , Switched Ignition & RPM)
  • Integrated ignition timing control when used with Hyperspark or MSD Pro-Billet distributors
  • Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!
Shop Sniper EFI Quadrajet

Sniper EFI Quick Reference Guide

Sniper EFIHorsepower (Naturally Aspirated)Horsepower (Power Adder)Injectors (100LB/HR)Boost ControlBarrelsCFMFuel Pressure RegulatorAvailable as Master Kit
4150 Sniper EFI6505754No4800 @ 1.5" HgIncludedYes
Super Sniper 6506505754Yes4800 @ 1.5" HgIncludedNo
Super Sniper 125065012508Yes4800 @ 1.5" HgIncludedNo
Sniper 2x4 41501250
12508No
2x41600 @ 1.5" HgNot IncludedNo
Super Sniper 2x4 4150125012508Yes2x41600 @ 1.5" HgNot IncludedNo
Sniper XFlow8006904x120Yes4900 @ 1.5" HgNot IncludedNo
Sniper XFlow 137580013758x120Yes4900 @ 1.5" HgNot IncludedNo
Sniper EFI 23003502852No2580 @ 3" HgIncludedYes
Super Sniper 23003506504Yes2580 @ 3" HgIncludedNo
Sniper EFI BBD 3502852No2370 @ 3" HgIncludedYes
Sniper EFI Small Bore 2GC3502852No2370 @ 3" HgIncludedYes
Sniper EFI Quadrajet5005754No4715 @ 1.5" HgNot IncludedYes
Sniper EFI Stealth 4500150012508Yes41440 @ 1.5" HgNot IncludedNo

Terminator X Systems

Terminator X LS Kits

  • Standalone Plug and Play Engine Control for GM LS Engines
  • Terminator X Features Real-Time Fuel Learn, High Impedance Injector Drivers, Integrated 1bar MAP Sensor & 4 Programmable Inputs and Outputs
  • Terminator X Max - also Controls GM Automatic Transmission (4L60/4L65/4L70/4L75/4L80/4L85)
  • Inputs & Outputs Are Ideal for Electric Fans, Boost Control Solenoids, Progressive Nitrous Control & More
Shop Terminator X and X Max LS Kits

Terminator X Ford Kits

  • Plug and play Ford V8 engine control, such as the 302w, 351w, 460 Big Block, 4.6L/5.4L Modular, and Coyote.
  • Includes EV1 Injector Harness, for commonly found injectors on most stock ford engines.
  • Fox body Specific Kits contain an ECU Mounting Bracket - TFI Ignition Adapter - a foxbody specific engine main harness, as well as MAT and CTS sensors. These kits also include application specific installation instructions to help you quickly and accurately convert your 5.0 powered foxbody to Terminator X EFI!
  • Drive-by Wire Throttle Body Control (Terminator X Max Only)
  • Ford 4R70W Transmission Control Harness (Terminator X Max Only)
Shop Terminator X and X Max Ford Kits

Terminator X GEN III HEMI Kits

  • Plug and play GEN III HEMI engine control for 2003-2013+ such as the 5.7L, 6.1L and 6.4L engines
  • Plug and Play compatible with Holley EFI accessories – Analog gauges, shift lights, modules, and both 6.86” and 12.3” Pro Dash
  • Drive-by Wire Throttle Body Control (Terminator X Max Only)
  • Electronic Transmission Control (Terminator X Max Only)
  • EV1 or EV6 injector harness included (depending on your injector configuration)
Shop Terminator X and X Max GEN III HEMI Kits

Terminator X Stealth 4BBL Kits

  • Bolt on 4150 Flange Carburetor Replacement
  • Capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction applications
  • Terminator X Max Stealth 4150 kits provide transmission control for Pre-2009 GM 4L60E/4L80E Transmissions (Part numbers 550-1011, 550-1012,550-1013)
  • Internal 1bar MAP sensor, built into the Terminator X ECU.
Shop Terminator X and X Max Stealth 4150
  • Plug and play Domestic V8 engine control
  • Drive-by Wire Throttle Body Control (Terminator X Max Only)
  • Electronic Transmission Control GM 4L60-80 - Ford 4R70W - Chrysler 46RE (Terminator X Max Only)
  • Genuine Bosch LSU 4.9 Wideband Control (Will not work with LSU 4.2 Oxygen Sensors)
  • On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal – Cam Signal. Allow you to identify any Critical engine issues at a glance
  • Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths) - or for Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector terminated, making the installation a snap.
  • 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (Fuel and Oil Pressure Inputs are pre-terminated)
  • 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
  • Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
  • Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
  • Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table
  • Integrated Datalogging to the 3.5” Handheld SD Card
  • Free EFI Tuning Software for complete control of your Terminator X power plant

Holley Electronic Fuel Injection Comparision Chart

Hardware HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
Connectors 2 2 6 4 -
Injector Drivers 8 8 12 8 8
Low Impedance Injector Drivers YES NO YES NO NO
Communication via USB Port YES NO YES NO NO
Communication via CAN adapter NO YES NO YES YES
Diagnostic LEDs NO YES NO YES NO
Knock Sensors 2 2 2 2 -
Enclosure Aluminum Composite Aluminum Composite -
Potted YES NO YES NO YES
Data Logging HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
Internal & External External Only Internal & External External Only External Only
MAP Sensor HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
External Only Internal 1 BAR, or External External Only Internal 1 BAR, or External Internal 2.5 BAR
Wideband Sensors HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
1 1 2 1 1
Bosch 4.2 YES NO YES NO NO
NTK YES NO YES NO NO
Bosch 4.9 NO YES NO YES YES
Total Inputs (+12v, Gnd, 5v, Freq) HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
4 4 50 4 Varies
+12v Yes Yes Yes Yes No
Ground Yes Yes Yes Yes 2
+5v Sensor Yes Yes Yes Yes 3* - SS Only
Frequency Yes Yes Yes Yes NO
Thermistor Yes NO Yes NO NO
+20v Yes NO Yes NO NO
Digital Speed NO NO Yes NO NO
Customizable Software Inputs 80 20 80 20 NO
A/C Shutdown Yes Yes Yes Yes NO
Total Outputs (Gnd, PWM-) HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
4 4 36 4 Varies
+12v Yes NO Yes NO No
PWM+ Yes NO Yes NO No
Ground Yes Yes Yes Yes YES
PWM- Yes Yes Yes Yes YES
Customizable Software Outputs 62 20 62 20 NO
Dual Fans Yes Yes Yes Yes YES
Secondary Fuel Pump Yes Yes Yes Yes YES
IAC Kick Yes Yes Yes Yes YES
Non-Electronic Trans TCC Control Yes Yes Yes Yes NO
Load Sensing HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
VE YES YES YES YES YES
Speed Density YES YES YES YES YES
Alpha-N YES YES YES YES NO
Combo YES YES YES YES NO
Boost Control HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
MAP and Dome Control YES NO YES NO NO
Dome Control YES YES YES YES YES
Boost vs Time YES YES YES YES YES
Boost vs RPM YES YES YES YES YES
Boost vs Speed YES YES YES YES NO
Boost vs Gear YES YES YES YES NO
Boost Builder YES NO YES NO NO
Boost Safeties YES YES YES YES YES
Nitrous Stages HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
Wet Non-Progressive 8 1 8 1 1
Wet Progressive 8 1 8 1 1
Dry Non Progressive 8 1 8 1 1
Dry Progressive 8 1 8 1 1
GPOs 8 1 8 1 NO
Rich/Lean Safeties YES YES YES YES YES
Closed Loop to New Target YES YES YES YES YES
Advanced Input Strategies YES NO YES NO NO
Advanced Tables HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
1D 8 4 8 4 4
1D Per Gear 8 1 8 1 NO
2D 8 4 8 4 2
2D Per Gear 8 1 8 1 NO
Traction Control HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
YES NO YES NO NO
Water/Meth HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
YES NO YES NO NO
Staging Assist HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
YES YES YES YES NO
Drive By Wire HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
Single Throttle Body NO NO YES YES NO
Dual Throttle Body NO NO YES NO NO
Transmission Control HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
GM 4L60/4L70/4L80 NO NO YES YES NO
Ford AODE/4R70W NO NO YES YES NO
Accessories HP TERMINATOR X DOMINATOR TERMINATOR X MAX SNIPER TBI
7" Digital Dash YES YES YES YES YES
Pro-Dash YES YES YES YES YES
CAN Modules (VVT, etc) YES YES YES YES NO
Analog Gauges YES YES YES YES YES

Dominator EFI

  • Plug-and-play harness kits available for GM LS, Ford Coyote, Ford Mod Motor, and Dodge Gen III Hemi as well as universal unterminated harnesses to use on any engine you can imagine
  • Pound per hour and VE fueling strategies let you tune your engine the way you want to
  • Add-ons such as Coyote Ti-VCT control, time-based traction control, and a CAN input/output addition put HP EFI in a class of its own
  • Integrated boost and nitrous control is easy to use and makes add-on control boxes for power adders a thing of the past
  • Built-in base tunes allow you to get your project fired up quickly and easily
Shop Dominator EFI

12.3 inch Pro Dash

  • Real-time ECU tuning, allows you to make quick tune changes, without needing to hook up a laptop!
  • Capable of monitoring up to 238 real-time values such as RPM/TPS/Boost
  • 16 default background skins pre-loaded with unlimited options for importing custom layouts
  • Quickly swipe between multiple active screens (tune, warm-up, race, drive, etc.)
  • Virtual switch panel eliminates the need for external toggle switches
  • Manual or auto-brightness features for easy viewing day or night
  • Built-in GPS with odometer function (Antenna included)
  • On-screen datalog playback features allows you to review vital run information
  • Expandable storage via USB
  • No stylus required, capacitive touch, just like your smart phone.
  • User definable channel alarms and warnings
  • 6x 1/4-28 mounting holes for surface or flush mounting, with high quality hardware included!
  • Includes everything needed for installation!
  • USB Keyboard and Mouse functionality makes it quick and easy to setup new layouts
  • Includes 34 Pin Wiring Harness contains Power, Ground and CANbus connections
  • Input and output functionality for 13 multi-configurable inputs, and 4 ground switched outputs.
  • User defined alarms for any input
  • Upgradable with future software enhancements
  • Viewing area is 12.3" on the diagonal, 11.5" wide by 4.25" tall
  • Dash weight - 3.29lbs
  • Compatible with our Plug and Play Programmable Shift Light - Part Number 553-107
View Holley EFI 12.3" Pro Dash

7 inch Digital Dash

  • Plug and play connection to all Holley EFI systems via CAN bus
  • Compact, customizable dash for use in a variety of motorsports applications
  • 7" low glare, high brightness, high contrast, full color touch screen for easy viewing even in full sun
  • 800x480 resolution with auto brightness
  • Operating voltage min 8V - 20V
  • Weather proof aluminum housing featuring flexible mounting options
  • Completely customizable display of all EFI parameters including every user configurable input and output available
  • Multiple gauge and indicator types with limitless customization options
  • Quickly toggle between multiple active screens (tune, warm-up, race, drive, etc.)
  • Virtual Switch Panel (replaces the need for physical switches)
  • User defined alarms for any input
  • Configurable progressive shift lights and light bar
  • Control and on screen playback of EFI data logs
  • Download and save Holley EFI data logs to external USB memory stick
  • Expandable internal storage on micro SD card
  • Support for future USB devices
  • Upgradable with future software enhancements
  • Optional harness available to add physical inputs and outputs to the dash that can be used to perform multiple operations
  • Integrated 3 Axis Accelerometer
View Holley EFI 7" Digital Dash

CAN EGT Kit

  • Compatible with HP or Dominator EFI, and Terminator X EFI.
  • Plug and Play 8 Channel CAN EGT Module, for a quick and easy installation
  • High Quality ¼” Stepped Stainless Steel EGT Weld Bungs
  • 8x- Robust ¼” EGT Probes, designed to withstand the extreme cylinder pressures
  • 4’ CAN Extension Harness
  • 8x Analog output wires, to be used with non-Holley EFI installations
View Holley EFI 8 Channel CAN EGT Kit

CAN Input/Output Module

  • Quickly expand your HP/Terminator X or even Dominator ECU’s Input / Output control with 8 additional inputs and outputs
  • This module is perfect for anyone wanting their Holley EFI ECU to control more functions or monitor more data channels
  • HP and Terminator X EFI installations with only 4 inputs and 4 outputs can now add more functionality to their EFI system!
  • The 554-165 kits contain a pre-terminated CAN Harness, allowing you to quickly install the Holley EFI CAN Module to any existing Holley EFI installation.
  • Pre-Terminated flying leads makes installing new wires a breeze.
  • Inputs can be used for things such as:
  • -Switch 12v Toggle Switches - can be configured for external mechanical relays, or setup as digital switches via a Holley EFI dash
  • - Ground input for brake pedal switch
  • -5v analog inputs for sensors like fuel pressure, oil pressure, or nitrous bottle pressure
  • -Thermistor inputs for Coolant temperature sensors
  • Outputs can be used for things such as:
  • -Switch Low (Ground) – For relay control or activation
  • -Switch Low PWM (Ground) – -Switch Low PWM (Ground) – PWM Fan control – PWM Fuel Pump control - or other PWM- controlled devices.
  • Adjustable broadcast rate for each channel - from 0-100hz.
View Holley EFI CAN Input/Output Module Kit

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    EFI - Fuel Injection

    From GM's factory COPO Camaro to NASCAR to your car, get the new standard in fuel injection with Holley’s fuel injection kits and EFI systems. Our systems deliver more power and a better throttle response, giving you the performance you need. Learn more at Holley.com.