its not just about getting caught storm...its about the enivoronment and the air you breathe around you...i wont do it just for 5 hp at most.
and on a technical note...the car can easily throw a CEL if you run without a cat and moreover, if you run rich or vice versa...you disable the process of engine knowing it.
next year..as a part of my full cat back upgrade...i will be putting on a high performance cat.