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Not sure on the others but I agree on comment 4 about the vane position. At cruising speed mine are programmed to be closed so it doesn’t produce boost, in milliseconds of the throttle being pressed they open up to produce boost.
Also of the DEF refill, there were occasions where I didn’t get 5000 miles between fill up on factory tune, because I did auto cross and was hammering the throttle daily driving. Don’t think it’s due to the tune. Probably more of a “ I got a new tune, and now I can’t keep my foot off the throttle cause I’m excited “ so the car uses more def.
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