• The intake air chamber is made of plastic to realize lightweight.
• The intake air chamber contains an intake air control valve. This valve is activated by ACIS (Acoustic Control Induction System) and is used to alter the intake pipe length to improve the engine performance in all speed range. For details, see page EG-126.
• The ACIS actuator uses an electric actuator and is laser-welded onto the intake air chamber. Many of the components are made of plastic for weight reduction.
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