If you're still using your stock exhaust system, you are definitely limiting your vehicle's performance. Why? Because when you want to unleash all the power hidden within your vehicle, the very first thing you should do is replace your stock exhaust system with a non-restrictive after-market unit. The exhausts systems that we stock are specially designed to suck all the gases out of the cylinders, and thus leave enough room for oxygen to flow into. That's what lets your vehicle produce much more power and reach its peak power within a shorter time.