I'm making 16.5 peak boost with a VF30 on crap cali gas. I have all the supporting mods you have and a few others.
If you want to push those high levels of boost add octane. I am adding alcohol injection to my car to run a nice safe tune hopefully pushing ~18.5psi. In the past I have run toulene to get more boost safely.
You ask what people have to run more boost in Cali?
1.Race Gas, Water Injection, Alcohol Injection, Toulene, Xylene, ETC.
2.Turbos that are designed to run high boost efficently are pretty important also.
3.Larger or trick post-turbo cooling systems(once again, alcohol and water injection come to mind).
4. I'm sure I missed a few things.
I have some serious doubts any modified stocker will run 22 psi efficently...let alone to redline? That sounds so insane to me, have you seen the td04 compressor map? Unless you plan on running aviation fuel or something...idk