Can anybody help with my mates Audi TT? He has a few issues with his car at the minute but im going to start with the obvious, he has a split pipe and his car doesnt seem to be right, ive had a quick look and i believe its off his fuel pressure regulator, not sure if this pipe is causing his issues , what does the pipe do? Does any one know who does replacment pipes such as silicone ones.

pics below:





cheers.