can i do it?

basicly my sapphire currently sits at stage 2 spec (3 bar, greens, rs500 cooler, grpA filter, ahmed bayjoo 330 chip), i've got a T34 turbo waiting to go on but i'm a bit shy to do it due to not knowing if i'm going to need a whole remap new chip etc?

i'm not looking to run massive boost, i'd be happy peaking at 22psi and holding just under 20psi ish.

your opinions much appreciated

cheers
john