Been having some inconstancy with my STS meth pressure switch. I think it might be from the previous own of the kit. When I got it they had it set to come on at 3psi. When I changed it to 6 it took about 30 min messing with it be for it worked correctly. It seems to be getting worse. I know the direction say setting below 4 or 5 could damage switch. I am looking in to getting a Nason Pressure switches from Devilsown. you can search for it at google. Anyone use another one that they like?

 

I used one of these PN 3460K11 from http://www.mcmaster.com/ on my S-10 it worked well. But I like the way the D.O. progressive controller works MUCH better.