I think vagsport push the fact that it is 70mm CNC bent tube. As far as i'm aware 70mm SS tube is more uncommon and thus expensive (Not 2x as much though).Yeah i dont understand where the money is in the dearer parts.
I have a pre WLTP 4drive estate with the smaller centre box (same as golf r and S3) not the triangular one and no GPFs .i didn't think you could doe the delete on the Estate.
The pipe is 65mm diameter at the front and 65mm at the rear (as opposed to 70mm at the rear box on the hatch). So the vagsport one seems a bit pointless on the ST. Just creates a larger void for the exhaust waves to expand into, which causes a damping affect.
Have you checked you have the resonator? As I was under the influence that they canned them on the hatchback as the GPF created enough of a silencer? Dont hold me to that though. BTW i assume you have the hatchback?mine has the GPF fitted so i suppose this will act in itself as a silencer, so by removing the middle res it shouldnt be to intrusive. Not many been carried out on the new 290 (that have been reported anyway)