Mark a hot wire maf corrects for most of this. A MAF is just a fancy resistor, the difficult part in making maf is the conversion table. Anyway as the air passes through the maf it cools the wire. Obviously the cooloer the air the more resistance there is across the wire so the higher the voltage (end results more fuel).

Mustangs also utilize a intake air sensor which allows the ecu to adjust fuel tables based upon intake air temps.

Between the two it does a very good job correcting the fuel in just about any enviroment.