Hi Guys,
I'm in the middle of working on tuning my GM 6 Speed Transmission.
I'm looking at TCC Desired Pressure [TCM 5672 Table]. Whlist the Line Pressure channel (ParameterID="4212) is able to be logged, I wanted to ask if anyone knows how log or calculate the PCA pressure?
Chris @ HPT does mention the following: "There is an option to cal the pressure tables as line pressure or as PCA pressures. ie. you can cal the tables to already take into account the characteristic offset & gain of the setup. This gain is 2.045 which explains why the pressures in the tables are double what you are seeing in the scanner. The TCM divides the pressures by the gain value to get PCA pressure, which is what is displayed in the scanner."
I'm assuming here when he says "TCM divides the pressures by the gain value to get PCA pressure" He means ParameterID="4212" = PCS 1 (Line Pressure), however I cannot see the offset being factored in anywhere? Am I missing something?
I can see there are channels for the following:
ParameterID="4212" = PCS 1 (Line Pressure)
ParameterID="4213" = PCS 2
ParameterID="4214" = PCS 3
ParameterID="4215" = PCS 4
ParameterID="4216" = PCS 5
I have read the following threads, but none have difnitave answer to how to work out the PCA Pressure?
https://forum.hptuners.com/showthrea...RCLE-D-3000-HP
https://forum.hptuners.com/showthrea...eter-questions
Thank you.