Originally posted by The Barst
Test pipes are GAY. When you can get a carssound cat for almost the same price and lose like what 1hp vs. a test pipe? Whatever....
There's an exception for rotaries, we run about 500 degrees hotter than a piston motor. So, we need "special" cats that can stand up to the heat. Random Tech is the only people that I know of off-hand that make rotary-specific cats. Also, we'll burn up fiberglass packed mufflers too, need mufflers that have stainless-steel packing/wadding.