D Turbo tuning.

[Dum-Dum]

It's as simple as winding the wastegate fully in and then setting it up with max fuelling?

You can and its the easier than doing it properly but it makes it very easy to repeatedly over speed the turbo and this will wear it out quickly, you'll also get epic compressor stall when you change gear and if its violent enough this can break the blades clean off the compressor wheel and then suck them into the inlet (worst case scenario). That said it sounds EPIC