either your turbo bearings are going out or you may just have a tiny air
leak in your intake maifold. Ya just might wanna try to re-tourqe
everything turbo related or with the car running mix up some dish detergent
and water-put that in a spray bottle-and spray your manifolds with the
engine at high rpms. If no bubbles from air leaks are seen go get a beer
and call a mechanic
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