GTI _Ant, Maybe that shadow you pointed out on the picture of my exhaust is actually a dent, even though the wheel was removed, I couldn’t directly see that point from the wheel well due to the trailing arm, and viewed from underneath I couldn’t get particularly close due to the trolley jack being there and it was raining at the time so didn’t want to lay on my back! I’m now curious however, and will have another better look, it could of course be something that is CS specific, and not present on the 245 GTI.