The outside air is drawn through the air filter element. The air cleaner is remotely mounted. The air flows out of the air cleaner assembly into an air duct containing the IAT sensor, and through the Mass Air Flow (MAF) sensor. From here, the airflow is run through a complex series of ducts up to the Intake Resonance Switchover valve. The position of the vane in the Intake Resonance Switchover valve dictates the path that the air will follow. From the resonance valve, the air passes through a pair of ducts to the throttle body. The air then flows into the intake manifold. The air flow path is directed by the position of the Intake Plenum Switchover valve. The air then flows through the cylinder heads and into the cylinders.

Figure 1:
Figure 2:

The Multi-Ram System functional Diagram shows four stages of air flow: I is Air flow at idle; II is Air flow at full load, low RPM; III is Air flow at full load, mid RPM; IV is Air flow at full load, high RPM.