Yes - I do it every 3 years to satisfy the local vehicle inspector (I do it twice as I then revert back to the box I want on). You may have to take the bumper off depending on the size of the exhaust pipes. I do replace the bolts between the exhaust and the cat to ensure they do not rust up.Hi all, is it possible to remove just the back box? Every article and thread I have read drop the whole exhaust out cat and all.
I had forgotten the cat comes with captive bolts. I had mine drilled out so that I could take off the backbox every three years.- the bolts were replaced with normal bolts and nuts.Right another silly question then, as I can’t quite see under the car. Is it a set of nuts and bolts that attach to the cat, so if they snap I can just replace them, or are there studs or threads which would need to be drilled out.
Yes, thats why I said mine took me nearly a whole day to do. Good when you have time on your hands (semi-retired). i replaced all nuts/blots and washers 5 years ago now and it looks like 15 underneath! It started with the flexi being blown when i first bought the car home- once you start, you might as well replace all.I think I may do the same, thanks guys, always like to know what I’m getting into before I start.