Hi jetay1,
I think:
What happens to MAP and engine output in % ? Increase or decrease.
Pressure remains the same - so does MAP. Greater mass of air into the engine, so power will increase. If fixed prop, air density has a bigger effect on the prop so RPM will fall. If variable pitch prop, RPM will remain the same but pitch will absorb the power. Both will see increase in airspeed.
How does the picture change if the engine is carburated or fuel injected?
Carburettor engine will need to be enriched (denser air) to maintain mixture, fuel injected engine will automatically adjust to maintain mixture (mass flow sensor).