Engine and Turbo noise!

[Fazinator]

Does anyone else with an ecoboost hear a whistling after the ignition has been turned off? Is this usual? Is that the turbo cooling down?

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[Biffosaur]

Does anyone else with an ecoboost hear a whistling after the ignition has been turned off? Is this usual? Is that the turbo cooling down?

How long does it whistle? It's probably just slowing down and coming to a stop since the exhaust isn't spinning it anymore. Completely normal.