I've notice that I can get ~16psi under 50% TPS @ ~3.5K rpm /w my Hydra
Good or bad?
If I'm getting currect AFR it should be no problem. right?
Anyway to controll boost by TPS?

The PTFB issue is with factory ECU cars that will stay in closed loop at low TPS, causing the car to want to run stoich. As long as your A/Fs are correct for your boost, PTFB isn't an issue.