Cobb runs most of their Stage 1 maps at 16.5 PSI or so peak. There is not much difference from the factory mapping vs the Cobb mappings. Most of the power increase and performance increase is done by leaning out the fuel a bit, upping the boost a tad and changing the O/L C/L delays. Cobb usually has release notes on what is changed with their mappings. Stage 1 is quite safe on most cars, but a protune is always best.
Remember that there are target boost compensations as well, so if you are at altitude do not expect to ht 16 PSI. If you are near sea level expect a little overboost. The boost control does not "learn". It simply has compensations built into it for temperature and altitude changes.