I have a 2006 2.0T 133,000 miles. New evap purge valve, and boost pressure control valve. Last night I drove to a city about 50 miles away. No problems on the way down but as I entered the freeway on the drive home I noticed that that starting in 4th gear the turbo sounded as if air was blowing through it or it was just blowing air. No normal turbo sound. There was also no boost even though the gauge was near red line. I decided not to drive it home and found a ride but now I'm wondering if it could be a vacuum problem or if my turbo is shot. No CEL came on at all. I appreciate all the help and insights you could give me as I live in Utah and it is really cold to walk to work. Thanks!!!