I have used Kavlico fuel pressure sensors for measuring fuel
rail pressure in tuning EFI engines, but these I think go up
to only 100PSI. Have seen ones for hydraulics that are
rated higher (like 1000PSI) but have never had a call to
use them.
MAP sensors I have seen up to 3.5bar for turbo applications.
None of these are digital, they put out 0-5V (with a "data is junk"
band at either end, usable range of Delphi MAP sensors is 0.5 -
4.5V analog on most datasheets). You'd need a 0-5V single ended
range ADC and some cal work after the fact.