Cold weather MAP/RPM question
I have a total brain block here, could you help me out please.
Say you are cruising with a set MAP+RPM at 65% power combination, leaned to best economy in ISA conditions at 4000ft. Naturally aspirated engine.
Suddenly the temperature of the air is decreased by 30C. None of the engine controls are touched.
What happens to MAP and engine output in % ? Increase or decrease.
How does the picture change if the engine is carburated or fuel injected?