it wont fit and it would be a waste of moeny and timeto try IMO
the RS4 is two pipes strait down from the two cats and 2 exhuast manis
the pipes bent to fit under car and i doubt u can find a point to connect the pipes
the 1.8T is a single pipe split in to two which is kinda pointless
here are two aftermarket exhuast so u can compare
im sure u can tell which one is the 1.8T and RS4, if u cant i suggest u dont go APR stage 3

