A control system for a fuel delivery system provides enhanced functionality and diagnostic capabilities relative to known systems. A GNSSINS system determines a location of the vehicle. Thereafter, the sintered magnet body is heated, thereby diffusing the metallic element M and the heavy rare-earth element RH from the surface of the magnet body deeper inside the magnet. Furthermore, the facing sides of the legs converge backwards such that a distance between them is reduced from the maximum distance to a minimum distance in the rear portion. One embodiment includes transforming the velocity into pore pressure of the formation.