I have a 93 civic dx and i just swapped in a obd1 b18b. I putted in the 95 obd1 ecu from an integra ls. I don't think there's any wires I have to change around on the harness right? It's burning extremely rich. The car starts but it idles high for less than one minute and the car dies. I adjusted the throttle body. I check the engine lights, I only got a code for ivac and change that, but the car still dies after a few seconds. The block was just freshly rebuilt. Anyone have any ideas at what it could be?