It is my understanding through internet research, that the ECU is different- different part number even. I have heard of people swapping out their USDM ECU for the CDM ECU and everything works normally- no codes were thrown- as if the CDM ECU doesn't look for the input. That being said, I also wondered if cutting the altc wire would prevent the code but have the same effect.... But I wanted to eliminate any possibility that the ECU could some how off set parameters, thinking that it still had control, and things weren't as they were. So the Grn/Red wire it was lol.
Side note: Hondata can use the ELD circuit to allow for a wideband O2 sensor hook up. It takes cutting a resistor out, but it allows it to read through a 0-5 volt reference. I guess that's how 'unimportant' the ELD is haha.
