I'm looking at all my wiring diagrams for my CRX and noticing that the Emissions Control Unit (not engine control unit) is wired into pretty much everything. I have pulled out all the shitty vacuum routing and control boxes because I'm swapping in a weber carburetor. Without the vacuum routing is there any way that I could eliminate the need for the ecu? Has anybody here done this? I know that the fan relay is routed into the ECU and a couple of other things but I think that I could just switch the fan on manually with a relay once the engine reaches operating temp.

If anybody here has ever done the 1.5 carb swap and has any tips I would love to hear them.