Anyone Gutted Their CAT?

[BMWM6]

Has anyone gutted the CAT under the exhaust manifolds? Or, if you don't want to admit you did on a public forum, can you please relate to someone (your cousin maybe?) who has and their experience with doing that? I have no emissions testing where I am and am looking for a performance and MPG gain with reducing the back pressure that close to the exhaust manifold. Thanks.

[Melveo]

I have. Give no promblems and sound beefy. People always want to race. It also sounds like gunshots with no muffler. Actually loses mpg if you always rape it but i still get 40mpg putting around