Holley’s large 12.3” Pro Dash part # 553-111 via Marken Performance allows you to monitor engine parameters at a glance and custom tune with your finger tips. There’s even a virtual switch panel to control your accessories. The Pro Dash is a must have for any Holley EFI system as it was Sema’s Best engineered product and now it is bigger and better!
  Holley EFI Pro Dash measures 13.44" wide, 5.81" tall and 1.25" deep. The Pro Dash is completely customizable for use in a variety of motorsports applications. It features a 12.3" 1280x480 resolution low glare, high brightness, high contrast, full color capacitive touch screen for easy viewing even in full sun, plug and play connection to all Holley EFI systems as well as a weather resistant aluminum housing featuring flexible mounting options.
  The Holley EFI Pro Dash comes preconfigured with 10 gauge screens that can be programmed and are fully customizable to your personal preferences using any of the 16 background skins, or import your own custom layout.
  The Pro Dash contains 4 ground switched outputs, that can be utilized with the switch panel feature to quickly turn on any of your auxiliary accessories, such as a master nitrous switch, or an electric water pump.
  Holley’s Pro Dash features an easy to use virtual switch panel, eliminating the for dash mounted switches. A progressive shift light and multi-configuration light bar can be added to gauge screens to help keep tabs on your engines rpms. The Pro Dash’s included GPS module provides satellite accuracy and puts the convenience of a speedometer and odometer in any vehicle whether you’re on land or water!
    Nice Video: