According to Smart Parts you can't just change the springs, they're different manifolds etc etc....Originally posted by ChrisWhiteSTEL
I am sure you can change the springs in the HP Max Flo 4500psi, but then i am guessing you would need a new guage. Its not something an user would do, but to change a maxxy i think a tech might do it.
I have seen Max Flo HP 4500psi that are specific for Angels ie. max pressure on guage arround 600-650psi.
It all depends on what marker your running and get the air system to match.