I am also wondering about my turbo. When I had everything apart I rebuilt it, power seems fine but it sounds different now. Before I heard it wind up and usually when I let off the gas it would make a "psst" sound. Now there's more of a whistle and no psst... worried I tightened the wheel up to much and it's not building up as much pressure as it was or should? Not sure how I would check it.
I keep checking for soot on all of the connections and everything seems good. No leaks I can find...
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