Need more info. Are you looking for tire psi, compression psi, cooling system psi, AC psi?

Oil pressure psi? Cooling system pressure psi? Tire pressure psi? Fuel pressure psi? Engine compression psi? Need more info please.

1,000 psi

factory air pressure norm is 80 psi

In an FMVSS121 compliant air brake system, cut out pressure is between 115 - 130 psi, with a cut-in pressure of no more than 25 psi below cut-out pressure. The 90 psi figure is what the brake chambers are regulated at, not the entire system.