Turbo Question

IIRC Flow charts go by Turbo RPM -> CFM and not PSI, which makes them sorta confusing, props on the writeup C. You taught me something as well. Also you perhaps answered a question Ive been having over the past couple weeks. Im running a straigt t3, and it has been a great turbo, until I had massive head work done. Now I seem to be making LESS power on the dyno, and the turbo seems to have a hard time keeping 10psi. I now believe I am out flowing my turbo, Im thinking it's time for an upgrade.