Most people are perfectly happy with how their stock vehicle sounds and performs. After all, the hours invested in the engineering behind the engine, exhaust, intake, and suspension of a vehicle are practically countless. In fact, most companies estimate that it takes 15 years to design a car. However, there are more than a few of us gear heads out there that want to change how our vehicle sounds, feels, and performs. This is usually done through a series of modifications to the intake, suspension, tune, charger(s), and especially, the exhaust. That brings us to the straight pipe exhaust system.