sooo i did a boost leak test and i feel dumb i should've just went a little further to the turbo and see that my inlet was loose and yeah, but i took the boost controller off and put the stock one on...so what im asking does anyone know how to change the boost on the ap so i can go back to 21.5 psi

Turbo inlet? As in intake to turbo connection?

A loose turbo inlet would not cause a boost leak, though it could mess with your fuel trims a little. And I would strongly recommend against you trying to adjust your own tune in ATR.

should i just put the mbc back on then

Turbo inlet in constant vacuum and never sees boost. Most people pressure test their systems by removing the turbo inlet and putting a plug on the compressor inlet.

they went through the sri and then he heard ti whisteling down there