Originally Posted by BlueXJ
It is divided into several peces on an XJ. There is the MAT and the TB itself with the IAC and the TPS all together they do the job af a MAS on most systems.
Not really, but kinda sorta close. The mass airflow sensor is used to sense the density and volume of air going into the engine, along with a few other sensors as well. Jeeps use a speed density style fuel injection system. It uses the intake air temp sensor to check temperature, the map sensor to check barometric pressure, and the crank sensor to see how fast the engine is turning. The engine controller knows how much air the engine is drawing in at any given rpm and baro pressure, and uses the other sensors to complete the calculations required to run the engine efficently.