The boost curve (at full load) should rise from essentially no boost to 8 bar boost between 1200 and 2000 rpm and then remain at or slightlyabove 8 bar all the way out to 4000+ rpm with just a little droop at theas you reach the 5000+ limit.
Impressive! The most boost I'm aware of is some of the Cummins rodders that run about 4 Bar into the four-digit horsepower range. (Or was that 0.8 Bar? :-) -- Jim