Personaly I'd say my turbo is a standard T2 with a diy adjustable actuator but as long as it works.......
I'm running about 10psi at the moment have to see what happens when the intercooler is plumbed in now.

Yeah 12 is maximum really without intercooler. 10 is ideal. Have you blanked of the pov valve on the inlet as this will be opening up otherwise.

Good luck with it. Where abouts are you from?