Setting Turbo Boost with boost foolers

[ChrisCNC]

The Boost PSI that can be displayed on the Gryphon CTS comes from the MAP sensor, correct?

If I install a boost fooler so the MAP sensor always thinks I'm at or below 23 psi then the max I'll ever see on the display is that 23 psi (please correct me if I'm wrong).

So if someone wants to get an aftermarket wastegate like the Bighead or TurboMaster, then to accurately set these (like to above 24 psi) then you'll need a separate boost guage, correct? Otherwise you'll always top out at the top setting of the boost fooler and you'll have no real idea where you are at.

I guess I'm unclear on what PHP tunes are able to modify. Are the custom tunes able to prevent defueling at >23 psi boost? Does it take this portion of the logic over, or is that something that can only be handled with boost foolers and upgraded turbo's and wastegates.

I've got a boost fooler on it's way (Overboost Annihilator) and have been making up my mind between a turboMaster or a Bank BigHead wastegate controller but was looking down the road as to how I'm going to get the boost set in an acceptable range once it is installed.

That's a curiosity to me as well (maybe better in a separate thread) but if the information that the tunes gets regarding boost comes from the MAP Sensor then anything over ~23psi is going to be some extrapolated function anyway. But maybe this is well (enough) understood/estimated that it wouldn't really matter anyway. Would there be any real advantage to having accurate boost numbers above 23 psi for moderately modified trucks?

-Kevin
2003 F250 SD Crewcab, 7.3L FX4 4X4