Cars need to have a way of eliminating its excess gases or waste as not being able to do so can result to back pressure. Whether you believe it or not, most cars that are straight from the factory do not have free flow exhaust system instead, it uses small diameter piping which is bigger than what the car needs. If you will look at the exhaust manifold, you will see that its bends are not bent in mandrel manner to create better airflow.
In naturally aspirated vehicles, it is recommended to do the induction and exhaust first before working on anything else. In the next paragraphs, you’re going to discover the different parts of an exhaust system.
Manifold/exhaust headers/branches – these are taking the gases from different cylinders and combining them into 1 pipe that is interconnected to another one underneath the car or called the head pipe. The best branches that are available in the market make use of mandrel bends while others are ceramics coated for better heat reduction. In addition to that, they are flow tested to ensure that it flows the air out in the best way.
Head pipe – the head pipe is designed in such way to connect the branches to the catalyctic converter all the way to the mufflers. Normally, it has a straight path that doesn’t have much bends.
Catalyctic converter – it is converting dangerous chemicals similar to carbon monoxide, hydrocarbons as well as nitrogen to CO2 or carbon dioxide, water vapor, nitrogen and oxygen. As we discuss its function in greater detail, you will see that this has beads/honeycomb that is coated in palladium as well as platinum. This in return causes chemical reaction that is converting the bad gases to good ones.
Muffler – mufflers have one and one function only, and it’s to lower the loud sound made by the vehicle. It is able to do this by getting sound waves to bounce against each and therefore, cancelling them. If you will look closely other vehicles, it has a second muffler or two parallel mufflers even. There are often a couple of exhaust tailpipes that are connected to the final muffler. Usually, this is done for aesthetics only particularly when its tips are chromed.
Tailpipe – this basically consist of a piping from the muffler to the way back. Whether you believe it or not, majority of the aftermarket tailpipes you can purchase today have a beautifully chromed tip that’s either single or double tip. Most of the bends are found here because the piping needs to curve up and over the car’s rear axle. The truth is, there are some other suppliers that are putting lights on the tips of their exhaust.