Something does not sound right, lots of high hp cars running cats. If your tuned on HpTuners you may want to have someone else look at your tune. You either have a hardware problem with your cats or a tune problem - the cat over temp protection tables have a lot adjustability. There is no reason a car that is tuned correctly on 12-13 lbs. needs a cat delete. A bunch of 800hp pump gas cars and 900hp E85 cars are out there on factory cats without issues, running at the drag strip, etc.
