Fishnmagician, the answer I got on another forum was exact opposite and not what I expected. But I was willing to accept his answer since I really don't know.
Your answer, however, fits more into what I thought. If I put in 50psi before loaded, hook up and load up, what is my pressure then? 80 psi?
I intend on having two air gauges inside the truck, one for the tank and one for the bags. They'll be permanently mounted and the gauges I'm looking at are not cheap. $170 each. The one I'm almost ready to buy for the bags is a 0-60PSI gauge.
I don't want to buy the 0-60 and then max it out once I'm loaded up. Since the air compressor and air bags aren't installed yet, I can't test it either.