I also have this turbo and it runs 30psi and had no problems and believe

me it gets used, had it on the car 18 months and its not showing any

signs of wear, but i suppose if you abuse any turbo it will end up being

expensive.

A friend of mine had his T34-48 mapped by MSD peaking at 33psi and

tailing of to 28psi so it just goes to show how tough turbos are as long as

they have a good oil supply.

With these relative smallish turbos most mappers will mapp the boost to

drop at high rpm to stop them overspinning themselves and prolonging

the life of the turbo hope this helps