After driving the TT RS for a while with the Borla ATAK exhaust. I found that the raw cold start sound was really starting to bother me, my neighbors and bystanders in parking lots that made negative comments on how loud and raw it was. Then came the new down pipe and increase in sound volume. Too much like a race car! This system needed resonators now for sure.
After taking some measurements and resonator research I came across a pair of Vibrant Performance #1792 resonators 9.5" case length, 4" diameter that could be modified and welded in behind the X Pipe with out rebending any of the pipes. The resonators on the OEM sport exhaust are pretty much the same size as the Vibrant ones and seem to cut the harshness of the cold start down on the OEM system. The reason I am doing this is I really like the Borla, the way the borla looks and the use of the X Pipe and twin pipes down to twin mufflers does something to accent the sound of the 5 cylinder motor.
Also got the bung welded in on the down pipe for the wide band O2 sensor for tuning purposes.
Hope to get this reinstalled next week and see what changes were made to the sound.