This Tubi Style Exhaust System features Tubi's high-flow 200 cell race cats, which allow nearly 60 percent greater exhaust flow than the stock 600 cell units. It also includes free-flowing center mufflers that not only offer far less restriction than the original muffler, but also create an aggressive tone that is never intrusive or obnoxious in any way. The combined additional flow from the high-flow cats and mufflers translates to over 35+ hp on an otherwise stock car.