There are parachute QoL MM patches floating around to set the deploy pressure slider to the desired value by default (so you don't have to adjust every parachute).
This value is minAirPressureToOpen which TweakChute uses to determine the slider minimum setting.
I recommend using clampMinAirPressureToOpen instead as my limited testing showed that that is the value that determines what the minimum value for the slider itself is for stock parachutes.
There are parachute QoL MM patches floating around to set the deploy pressure slider to the desired value by default (so you don't have to adjust every parachute).
This value is minAirPressureToOpen which TweakChute uses to determine the slider minimum setting.
I recommend using clampMinAirPressureToOpen instead as my limited testing showed that that is the value that determines what the minimum value for the slider itself is for stock parachutes.