Im the proud owner of a 1997 20vt. Had it a couple of months and so far have gtech-1, prv and boost gauge.

I have got the prv set to peak around about 1.3psi
I know that it should be set to max of around 1.2 bar but what happens if the boost goes over that? does it kill my turbo? what mods do I need to make if I want to turn the prv up higher to get more power?