Went to wire up my ecu for VTEC, after my JDMb16a swap into my 1990 integra, and I found that the ecu pin # b19 was already occupied. I removed the pin and wired up my knock sensor. My ecu is throwing a trouble code for my vtec. I was informed that I need my knock sensor to work for my vtec to work. I checked the reference articles here and I was wondering if anybody can tell me what an ELD is? Is it a necessity? If so and i need to hook it back up what do I do about my Knock sensor?