i had the same thing happen to me on my 1.8t, the problem you have is with the rubber pipe on the intercooler it is a really easy fix just push the pipe on the intercooler properly and tighten the jubilee clips properly and its done, you will find the car will be much more responsive once its done because your loosing boost. if i remember correctly the intercooler is a side mounted one which will be behind the drivers side wing someone correct me if im wrong.