What psi do stadard turbo go to

[Frosty]

Echo pretty much what MY95 said, but i would try and get your turbo up to about 20 psi on the stage 2.

With boost controller ??

Yeah, think they are a bit fiddly to fit on a hdi with a standard turbo, to get the pipes onto the turbo and actuator. For it to be running 18psi someone must of adjusted the wastegate arm as i don't think it would see that much of an increase in boost with just upping the fuel on the map.