has anybody dared to remove the Cat from the stock exhaust? If yes, how? Cutting the muffler open underneath the cover? I want to avoid that and therefore I am thinking of using an airhammer thru the body of the muffler (internals obviously removed). But for that the material of the cat must be brittle. So has anybody experience with the material? Is it brittle like ceramic, or more like aluminum?
Any advice is appreciated.