Air Induction Valve Control System (AIV)

1986-88 300ZX, 1987-88 Maxima, Pulsar Exc. E16i Engine & 200SX w/VG30E Engine

The air induction valve (AIV) sends secondary air to the exhaust manifold, using a vacuum caused by exhaust pulsation in the exhaust manifold. When exhaust pressure is below atmospheric pressure, secondary air is sent to the exhaust manifold. When exhaust pressure is above atmospheric pressure, the reed valves prevent secondary air from being sent back to the air cleaner.