must be tied up, he normally comes along to help
It's like your not getting any response from the sensors to the PCM (bad or broken connection). Yes their should be a difference between O2 going in and O2 coming out. Don't understand the No exhaust Temp, guess the sensor isn't there?
Looking at motor on line I'm seeing 7 different Manuals and all show different serial number breaks for the EC. There has been several part number changes for the motor which could mean it doesn't have the sensor