If you have a Holley EFI equipped ride and have gone a bit overboard with accessories, sensors, and systems, you might be close to running out of inputs and outputs, depending on which system you have. It happens to the best of us, and can be frustrating if at first you think there is no solution that won’t cost you a system upgrade or swap. There are ways to combat this, by combining triggers on certain devices, but if you want complete customizing ability and the most flexibility from your EFI setup then all you have to do is use the Input/Output CAN Expansion Module from Holley EFI. Regardless of which of their current systems is in your ride, this module is a plug-in that will make your available inputs and outputs everything you could dream of.
Here is all the info from Holley EFI, along with links to the modules with and without harnesses.
The Holley EFI CAN Input/Output Module can be added to Holley EFI HP, Dominator, Terminator X and Terminator X Max EFI installation.
This CAN module will add eight inputs and eight outputs to the system, which can be used to control additional accessories, or provide critical sensor inputs. This module is perfect for anyone wanting to enhance the capabilities of their current ECU, yet have already tapped out their ECU’s Input/Output channels.