MAP and MAF sensor details

Some can explain what these MAP and MAF sensors are and what influence

MAP serves to measure the marker pressure and influences the progress of the spark and the MAF measures us the air flow that enters the acceleration body monitors the ECU if it is necessary to inject fuel if that sensor fails that sensor the car is pulling and tends to appear

MAP: Manifeold Air Pressure, or what is the same, air pressure in the intake manifold.
MAF: Mass Air Flow, or mass flow (kg/h) air ingested by the engine.

Usichimo influence because this information is directly taken by the computer to govern the injection time, the MAF measures the amount of air aspirated by the engine, and the MAP measures the preservation of aspirated air, both send signal to the computer of the amount of air that is entering the engine but by different forms of measurement, as well as the flow.