HI Folks. I am interested in cleaning out my intercooler, My car is a Audi A3 Sportsback 2L TDI 2005 and has covered 40,000 miles and does a mix of motorway and town driving and have found when I put my foot down under load there is a cloud of black smoke in my rear view mirror. I have hear that if you clean out the black grime from your cooler and atached pipework the smoke will be less from the exahust and the car will run a lot cleaner . I have a friend who has used petrol to clean out the intercooler !!! Then fushed the cooler out with a mix of hot water and wasing powder, then flushed it through with water and then dryed the cooler out with a hair dryer from the botom pipe I am not sure if this would do the trick? Would white spirit or isopropanol (IPA) be ok to use to clean out the cooler and pipework without causing any damage ? What pipework is required to be removed or disconnected to carry out the cleaning operation on the intercooler and also what is required to clean out the EGR valve and what pipework must be removed to get the EGR valve out ? Many thanks , hope you can assist in the information required.