Features:

• 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
• Expand Dominator ECU’s Input / Output control with (8) additional inputs and outputs
• 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) - PWM Fan Control – PWM Fuel Pump Control - or other PWM- controlled devices

About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!