The Edelbrock Performer 5.0 EFI (Electronic Fuel Injection) Intake Manifold features broad power range from idle to 5,500 RPM. A removable plenum cover allows access to runners for modifications and base manifold is CNC port matched to upper manifold for maximum performance. The upper and plenum cover are powder-coated light titanium gray. The base is as cast and not powder-coated. The intake manifold directs the air or air-fuel mixture from the throttle body to the intake ports in the cylinder head. The flow typically proceeds from the throttle body into a chamber called the plenum, which in turn feeds individual tubes, called runners, leading to each intake port.