I've seen the term "muffler delete" on a few youtube videos of the E46 330 exhaust, as a way to make them a bit louder.
Does anyone know what exactly this involves?
Do they remove the rear cats somehow and replace with a straight pipe?
Or hollow the cats out or something?
(I'm assuming the yank term muffler translates to catalyst converter?)
Just wondering if its a feasible option or not.