XUD *over boosting* ?

[ADV_93]

Hello everyone, basically the question i'm asking is... Can you make a d turbo create more boost than is needed for the fuelling? I'm running a Lucas and a K14 (at 18 psi) atm and i'm still creating a lot of smoke on boost. I know why etc. However, with my MBC, if i was to wind it to the fully "+" position, will it be boosting 38 psi or whatever or will the fuelling limit the boost created? I'm not too clued up on how the fuelling can control boosting, so if someone could explain it would really help, thanks