I just bought my wife a new VW Passat 1.9 TDI last Saturday. While trying to track down the 5w40, VW 505.01 spec synthetic oil VW says HAS to be used in this motor, I ran across a website that has a EGR bypass kit for the TDI. They had pictures of the amount of soot that builds up in the intake and the EGR. I mean these things were AT LEAST 3/4 clogged compared to the pics of a clean intake. They did not say how many miles it took to do this, but frankly I don't care. It was a mess, and they said it was all due to the EGR. I know, we are talking two different engines here, but they are both diesels with EGR systems. When we pull the plug on our EGR, does that totally keep exhaust from entering the intake?