One of the most important parts of a vehicle’s engine is the exhaust system. The exhaust system is responsible for disposing of the deadly, dangerous gases (carbon monoxide, nitrogen oxide, and nitrogen monoxide) that are being produced by an engine. In addition to this, the exhaust system- in particular the muffler- is responsible for reducing the noise that is created by combustion within the engine. Some drivers may experience problems with their exhaust system or may be thinking about buying an upgraded exhaust system. If this is the case for you, it’s important that you know the different parts of this system and how they work and relate to each other. Here at 4wheelonline, we break it all down for you, so your life can be a little bit easier.