Air Induction System

The Eagle Summit Ported Fuel Injection (PFI) engines, called Multi-Point Injection (MPI) by the manufacturer, use the same basic air induction system. They use a remote air filter (with airflow sensor) ducted to a plenum mounted throttle body.

The 1.5L engine includes the Jet Air System which has an additional valve at the top of each combustion chamber to inject a high velocity stream of air during low throttle operation. On intake stroke, air rushes out of jet valve opening into gases around spark plug and produces a strong swirl action in combustion chamber.

The 1.6L Turbo has additional ducting from air filter through a vacuum operated air by-pass valve to the turbo inlet. The air is then forced into the intake manifold by the turbocharger.