OK. So I am chatting today with some 'car enthusiasts' at work. One guy wanted to know why I did not have a turbo on my 07. I said because it would not pass inspection. He looked at me a little odd, and I said that I had to have a cat. And he said, "so run a cat after the turbo", and I sorta just sat there thinking 'why would that not work'. So why would that not work? (small note here. I have been told that I could run a header if it is followed by a cat. No real point doing that, but a turbo is a different critter).