I swaped my CX head that had 189,xxx miles on it for a DX that had about 80,xxx after i did that i had to switch the ECU b/c the CX ecu had the wrong gas curve, SO i got a 93' DX ECU and now im getting a CEL 4. I thought i might have been the distributor, so i changed that and it is still showing up. My other guess would be that my timing belt sliped. The weird thing is that when i put my 93' cx ECU on the CEL goes way Any help would be nice.