This is the last mass airflow sensor you will ever buy.  HPX-F

For FORD vehicles utilizing frequency based maf sensors.2011-2014
Will never peg. Sensor will support over 700HP when installed in a 3″ housing.
Sensor has two times the range of the stock sensor.
Designed to have the factory GT500 transfer function when installed in a 3″ tube for ease of tuning.
This sensor can be used in any housing from 2″ to over 5″. It can also be used for blow-thru or draw-through configurations.
Limited lifetime warranty.

*Requires 2011+ Ford maf connector
*Requires computer tuning
*Can be used on any frequency based maf system with computer tuning