First, it would be best if you were to share what year you have. There is more than one 2.0t available in N. America. If you know the 3-letter engine designation, then others on here will have a better idea of what to share.
@korean_malibu your post is kinda begging the obvious question: Why do you want to work on the downpipe? What is the reason, or what are you hoping to achieve from making any change to the downpipe?