Hmmm, Im glad I read this thread as I thought the Muffler was also a cat as well as the ones on the manifold, I was going to get the muffler pulled out thinking it was a cat lol so I guess this is a good thread.
Good effort though, I spent my Saturday removing my tow bar with an angle grinder after failing at removing my back bumper to remove it properly, Seriously I couldn’t stand the site of the tow bar on my 525i anymore, and I no longer have internet at home so had no way of looking it up. Oh well when I get a chance I’ll go visit my panel beater and get him to remove the bits that are attached inside the bumper, that tow bar weighs a ton might as well remove all of it.