On inspection of my exhaust system it seems all is not well
Someone has cut the x pipe too short and then welded a sleeve (badly) to bridge the gap which is now blowing.
BMW want crazy money to replace the x pipe and the O/S rear muffler.
Have any of you guys who have fitted aftermarket exhausts still got your originals you want to sell?
I would go for an Eisenmann system but need to keep it OEM for the warranty.