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.
As for naturally aspirated vehicles available today, it is best that you work first on its induction and exhaust prior to anything else. You will learn about the various parts of exhaust system in the next lines.
Manifold/exhaust headers/branches – this is taking the gases from the cylinder of the car’s engine which combines it to 1 pipe that is interconnected to the head pipe which is found underneath the car. The best branches that are available in the market make use of mandrel bends while others are ceramics coated for better heat reduction. There are several flow test performed on it as well to guarantee that the air is exerted in the best manner possible.
Head pipe – the main function of a head pipe is connecting the branches to catalyctic converter and then to mufflers. It is pretty normal to see it not having much bends and follow a straight path.
Catalyctic converter – this converts the dangerous chemicals like carbon monoxide, hydrocarbons as well as nitrogen into oxygen, nitrogen, water vapor and CO2. Digging deeper to what a catalyctic converter is, you’ll see that it compose of beads/honeycomb coated in palladium and platinum. With this in the exhaust of the car, it is able to transfer the bad gases into good one.
Muffler – deadening the loud sound produced by a car is the function of mufflers. 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 is the last part of the exhaust system and has piping from the vehicle’s muffler and all way back. Many of the aftermarket tailpipes that you can buy include nicely chromed tips that is either double or single tip. Most of the bends are found here because the piping needs to curve up and over the car’s rear axle. In fact, there are suppliers that even put lights onto the tips of their exhaust.