Air Injection System: Description

The air injection system is used to add secondary air to exhaust ports for further burning of hot exhaust gases. System consists of an air pump with a built-in relief valve, a check valve, an air injection manifold with air injection nozzles, an air switching valve, and a mixture control valve.

The mixture control valve prevents backfiring in the exhaust system during deceleration. In addition, California models use an electrically controlled vacuum switching valve. On Impulse, the air system is controlled by the electronic control module of the I-TEC system.