Wastegate adjustment
 

how do you adjust your wastegate for higher boost psi? is there anything that i should watch out for when doing so?

Our OBS's don't have wastegates, they have warm-up valves.

They don't have one

is there any way to adjust them to acheive higher boost psi?

tuning, injectors, turbo mods

Adjust what? You need more fuel to make more boost, but boost doesn't always mean more power.

ive been told by a couple guys that they adjusted their stock turbos to acheive a higher boost psi is this real or just bullshit??

On an OBS? Its bullshit because they don't have one

ITT:
a turbo that has no wastegate can be "turned up".

Your buddies were bullshitting you.