Holley EFI Kit – All Holley EFIs


Plug and play compatibility with Holley EFI setups. Click on the photos or scroll down to see examples and learn more.



OneGauge has the ability to communicate directly with your Holley EFI system- Sniper, Terminator, Terminator X, Dominator, and HP. An included plug-and-play Y-cable allows you to keep your handheld or laptop plugged in while seeing your gauges live on a OneGauge LCD touchscreen. 

OneGauge can access the sensors or gauges available on your Holley handheld but with the option to fully customize and design your screen, add a huge array of sensors and features, data log and view gauges on your phone or tablet simultaneously, and more.

This kit includes the following, plus any accessories added as optional purchases:

  • OneGauge Hub, ABS plastic case, and power wiring
  • 7″ LCD screen pre-loaded with all current OneGauge themes (see TheOneGauge.com/Themes)
  • Bluetooth connection for use with Android devices (connects directly to Torque Pro or RealDash)
  • CAN-BUS connection to Holley Terminator X systems through an included CAN-BUS y-cable

Holley compatibility can also be added to any of our vehicle specific kits. 

Want your screen to fit in dashes and mounts designed for Holley 7″ screens? Check out our 7″ Holley style housing!

OneGauge currently reads RPM, Coolant Temp, MAP (and boost/vacuum), IAT, TPS, AFR on all Holley products. Oil and Fuel Pressure, Speed, and Transmission (line) pressure and temp are also available on the screen for ECUs that support these sensors. Other readings coming from the Holley can be added by request.


OneGauge Digital Gauges offer the most versatility of any digital gauge system:
  • 25+ analog and digital inputs, pre-programmed to work with an ever-growing list of sensors; perfect for carbureted or pre-OBD-II engines
  • Screw terminals with labels and instructions allow for easy sensor addition or removal at any time
  • Optional OBD-II options for all OBD-II enabled vehicles and/or CAN-BUS communication for aftermarket EFI kits or standalone ECU’s
  • Temperature, pressure, vacuum/boost, oxygen, GPS speedometer, odometer, tachometer, voltage, fuel level, roll/tilt, TPMS, and more sensors available
  • OneGauge grows with your vehicle- move it from one vehicle to another, even with different engine types, with optional upgrades that can be added at any time
See your gauges your way:
  • Bluetooth compatibility with Android devices using Torque Pro or RealDash; no need to modify your vehicle, optional Apple device support
  • Our 7″ and 10″ high-contrast LCD touchscreens offer tons of pre-installed designs or design your own screen from scratch; other sizes available for custom builds
  • Superbright screens available for off-road, convertible, boat, or other high-sunlight applications
  • Compatible with PiDash screens, offering round and wide-screen display options
Expand your system to do more than just gauges:
  • Control vehicle accessories or electronics with relay packages to trigger fans, lights, fuel pumps, or any other electronic device
  • Lap timing and distance timing (1/4 mile, 1/8 mile, 0-60) standard with GPS speedometer
  • Optional alarms, shift lights (on screen or separate LEDs) and more
  • Data log using your phone or tablet, or save data to an SD card for later analysis
  • Nearly unlimited capability for digital inputs and outputs to add indicators
Screen mounting options for any vehicle:
  • Drive a classic vehicle? No need to modify your dash – options available for mounting phones, tablets, and LCD screens
  • Build your own dash using our pre-cut products, or let us build you a custom cluster; options available from 3D printed clusters to custom cluster building services
1-on-1 Customer service and reliable products
  • We stand by all of our products, offering at least a 90-day warranty on OneGauge parts
  • Quick and easy customer support for any and all installation and purchasing questions
  • Our products are ‘right to repair’ friendly- easy to work on and repair should the need arise
As always- reach out to us at Info@TheOneGauge.com with any questions about our products!


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