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I was at the track the other weekend, and between shifts (3rd to 4th) something happened ( I thought it just threrw a hose) and the car went from driving perfectly to having zero boost in any gear. The car did not smoke or anything, just lost all boost. It actually drove fine on a cooldown lap, it just had no boost. It starts, runs, idles, and shifts fine it just won't generate ANY boost. I have inspected all the usual culprits, ie. hoses, clamps, lines etc and can't figure it out... any ideas???