I have been trying to search with mixed results and a lot of old posts showing up, so time to make my own thread.
I am trying to understand max pressure setting vs. the line pressure set point.
For example, my stock tune has 110 PSI as max pressure. In 1st gear, 200 Nm of torque is 110.x PSI.
So, does that mean as torque increases the pressure will never exceed that 110 PSI?
I read a lot, saw Chris post a good bit of detail on the 6 speed several years back. I am curious to see what guys are doing with the 8 speeds (especially trucks) with line pressure. I see some guys increasing line pressure, but if you don't touch the max pressure, at high loads it will basically do nothing from what I understand. Based on some reading, I tried mine at 235 PSIG, but backed it down to 125 PSI until I can better understand. I know what Chris said was that was similar to the water valve in your house. It set the max pressure that could be obtained, but did not mean it would actually go to that pressure. I also read where some trouble codes will force max line pressure, so that was a big concern too.
I adjusted some of the excessively high shift times and went up 1 point in the inertia tables. I am trying to avoid the pressure table changes until I understand the max vs base. Really, can I leave the pressures stock and just live off the inertia changes. My main goal is to ensure the reduce shift time is properly balanced with line pressure.