downstream of the mixer 60 and the throttle 70 the tmap sensor 62 includes a temperature sensor and a pressure transducer as such the tmap sensor 62 is able to accurately measure temperatures and pressures in one embodiment the tmap sensor 62 senses one or more of the vacuum draw from the engine 14 a vacuum in the air duct 56 and or a barometric pressure depending on whether the key switch 50 is in the u201c on u201d position and whether the engine 14 is running or not for example the tmap sensor 62 measures the pressure and temperature of the media proximate the air intake port if the engine 14 is running and the application is normally aspirated the pressure the tmap sensor measures will be below atmospheric pressure if on the other hand the application is turbocharged the pressure the tmap sensor 62 measures could be above or below atmospheric pressure depending on the boost level throttle position engine speed and the like if the engine is not running the tmap sensor 62 measures atmospheric pressure the tmap sensor 62 is operably coupled to and monitored by the ecm 12 the throttle system 22 includes a foot pedal 68 a throttle 70 and a throttle position sensor tps 72 the foot pedal 68 permits a user of a vehicle to control the position of the throttle 70 the throttle 70 is disposed within the air duct 56 downstream of the mixer 60 and is in general a type of valve used to control the flow of an air fuel mixture into the.