different boost pressure

When I want to have different pressure one to 0.5bar and another to 1bar, is it must to have different maps for fuel or ignition, or I will use the same map with more high MAP number? the different map is important only for different fuels? there is other reason that is must to have second map?

Since MAP is typically the load axis of our fuel and ignition tables, there's no reason to have multiple maps just to run different boost levels. The different boost level just puts us in a different area of the same map. Dual maps are more likely to be used in a situation where you're running different fuels.