Originally Posted by
lionelhutz
No, I didn't miss how the transmission pressures are set in the calibration. As I posted, the xdf says psi in a number of places but all the tables and scalars for the line pressure are not psi. The tables all work together to come up with a number that refers back to the force motor tables and then the force motor current from the table is applied to the force motor. The current in the force motor is what sets the line pressure. PTS is nice to know but it doesn't really matter what it's called as long as everyone realizes what is actually happening.
In $EE increasing the maximum pressure scalar (the one normally set to 90 "psi" actually causes the line pressure to drop. I suspect the same would happen in this calibration.
Yes, the reverse pressure is different but I never bothered to mention the reverse pressure being high, because it is what it is and doesn't affect the pressure during normal forward driving (pressure when shifting and pressure between shifts).
I already knew that the xdf files for the older stuff all come from reverse engineering the calibration code.