wastegate actuators

[shellboy]

can some one tell me what the p.s.i. ratings mean?? looking to buy a new one from ATP. they sell some rated at 7 p.s.i. and 14 p.s.i. is this minimum settings b4 they open? i dont know?? :confused2::confused2:

[contraption22]

That would be the minium pressure. But there are varaibles such as turbine back pressure and how tight it's adujusted that will have an effect on actual cracking pressure.