Originally Posted by Grubrunner
I've always been told/educated in your second sentence as being spot on.
However, your last paragraph, while you nailed it in theory, is NOT an astute move to undertake. Removal of catalytic convertors is a serious Federal and emissions violation that's just not worth the benefits in lure of the consequences should you be pinned.
Federal regulations was 100% NOT the point. And I'd just as soon not argue the other points, but I will pose just one question from that last post....
So, by that last post, you'd expect, on a stock vehicle, open exhaust to perform better than stock exhaust..... at the track? Craziness. I'd love to line you up one day in my car.