pressure... On a TT, under similar conditions, the intake manifold will be under HIGH pressure (or at least substantially higher than atmospheric pressure). I have been too lazy to go find an old physics book so far, but I may dig one out this week to try to run some calculations. At this point, my hypothesis is that the higher pressure environment of a turbocharged motor will prevent this type of icing from occuring. I guess it's time to do some research and crucnh some numbers. Anyone else have any input for or against this theory?