When selecting an aftermarket exhaust system, it's important to decide between single and dual exhaust. In this guide, we'll talk about the differences between them and why you'd want one over the other.
SINGLE VS. DUAL EXHAUST
A common misconception is that the difference between single and dual exhaust is equal to the number of exhaust exit points on the vehicle: one or two. However, some vehicles may have dual exhaust tips while the overall system is still single, or may split at the muffler, which results in a dual exit on what is technically still a single exhaust system. In a true dual exhaust system, each exhaust manifold is attached to its own, independent exhaust system.
The availability of single and dual exhaust systems depends on the number of exhaust manifolds your vehicle has. While four-cylinder and five cylinder engines have one exhaust manifold with one pipe going to the catalytic converter or DPFE, a V6 or larger engine will have two manifolds. On a single exhaust system, the manifolds flow gases into a Y pipe, which joins the remainder of the system. On a dual exhaust system, each manifold gets its own series of exhaust pipes.