For 1990-2009 cars

### Circuit/System Description

The primary function of the air intake system is to provide filtered air to the engine. The system uses a filter-element mounted in a housing. The filter-housing is remotely mounted and uses intake ducts to route the incoming air into the throttle body. The secondary function of the air intake system is to muffle air induction noise. This is achieved by the use of resonators attached to the air intake ducts. The resonators are tuned to the specific powertrain. The intake air temperature (IAT) sensor is used to measure the temperature of the air entering the engine.