The green 803s dont flow enough for that sort of boost, they usually peak at around 25-26 and tail off

we can do 55lb siemens packages that will allow you to peak at 32psi and run the turbo flat out to the rev limiter, but it still wont hold 30psi as the T34 compressor is to small and doesnt flow enough air to keep up with the engine at high rpm. they will naturally tail off to around 25psi at the limiter.