I know the max is 14.7 psi or so. Is it possible to boost past that?
I'm using a safc2 for Tunning so I know the unit tricks ecu into thiinking there's less air coming in
So ecu doesnt see full 14psi from sensor. So can i boost past 15 psi without any issues?

yeah you could clamp the MAP sensor but it might mess with some of your other fuel settings. bet let me give you this advice. LEAVE IT ALONE! i know boost is awesome and you always want a little more and a little more but when you start screwing with it, you are looking for trouble. might happen a year from now, may be 5 years, but something is gonna give. just not worth it.