I've found a company that is selling stainless steel 3" Downpipes for VW 1.8T "All 1999.5-up MKIV Jetta's, Golf's, and Beetle's" for 160.00 brand new with a race pipe.
It looks just like ATP down pipe. ATP downpipes fit "Applications include VW Golf/Jetta IV, VW New Beetle, Audi TT 180 HP, Seat Leon, Audi A3, and Audi S3"
I called them and they could not say if it will fit the TT or not and they don't offer refunds.
So will any downpipe thats fits VW 1.8t fit on a Audi TT 1.8t?