I just finished my B18b swap into my Eg Hatch everything seems to be working great. The only code I am trowing is a code 3. I am running an OBD1 p75 ECU. I have tried several map sensors ( single cam OBD1, it runs but throws the code) 2 ( Auto zone 1995 OBD1 B18b, Will not even start the car) 3( the map that came with the motor, it runs but throws the code).

So first questions is Could it be the ECU? Might I have a P75 Auto ECU? Are the maps Different?

Second question is will it hinder daily driving?

 

Really guys no help