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  1. It must be the Turbo...General Question

    Alfa 159, Brera & 946 Spider
    All, I have begun to get a whistle / whizzing noise from the engine when I lift my foot of the accelerator. It stops as soon as I accelerate again. I think it must be the turbo. Assuming I'm correct does anyone know what causes it? Is it bad news and the prelude to a bigger problem? Thanks...
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