i recently bought a 96 civic ex.the original owner put in a y7 motor. i noticed the "CEL" was on so i hooked up my obd2 reader and it wouldnt link. i also noticed a series of plugs under the hood that had no where to go. so, i was thinking he still had the y8 harness. i havent checked the ecu yet. could this be the issue for my CEL to be on? if so, what do i need to do to fix the problem so i can pass emissions? thanks in advance