I have always wondered about the two columns; 'In Gear' and 'Park/Neutral'. I have different values in each column for some tables such as B5933 (Says, "Base timing used when the Throttle is closed and the vehicle is in park/neutral") B4605 (RPM offset) and other Idle tables. I have a manual transmission and I am not sure which column is being referenced. I also upgraded to an 0411 PCM so I may have missed a few wires.