Holley EFI CAN Input/Output Module Kit 554-165
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
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 ECUÕs 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 Ð PWM Fuel Pump Control - or other PWM- controlled devices
- Adjustable broadcast rate for each channel from 0-100 Hz
- Includes a pre-terminated CAN Harness allowing you to quickly install the Holley EFI CAN module to any existing Holley EFI installation
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!
Shipping information
Use this text to share information about your product.
Returns & warranty
Use this text to share information about your product.