Unfortunately it sounds like you should probably take it to someone. However, I'd probably start looking for a vacuum leak at this point. The easy way is to spray carb cleaner all over the intake tract from the MAF housing to the turbo inlet and check the throttle body, IC, and hoses to make sure everything is air tight. Careful with the bypass valve (AKA BOV) bolts. They'll strip real easy.
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Slow and low, that is the tempo.
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