Heres the poor little T3 on my car ages ago when John and I maxxed it out on the Sceret Services dyno for fun! We even went so far as to remove the boost controller and put a vacuum cannister on the wastegate nipple to "suck" the flapper closed! It would spike up to about 25 psi boost, then fall off to about 15 psi as the turbo couldnt keep up with airflow demands.

Turbo was a T3 55 trim (teeny tiny bit larger than the more ubiquitous T3 50 trim) in a 0.42 A/R comp housing paired to a standard T3 turbine in a 0.48 housing.