| If you are a passenger or a driver the car is like a | | | | the fuel. The air mixture fuel is ignited in the engine |
| small room for you. If you are the driver it is a small | | | | cylinder where it explodes and this explosion |
| room with a set of controls. And for you the car ride | | | | generates the mechanical force that drives the car |
| lasts the amount of time it takes you to reach the | | | | and its parts. Once the explosion is done the molecule |
| destination which can be a few minutes to a few | | | | will have reacted with the fuel and now would be |
| hours or if it is a long drive maybe even a full day and | | | | transformed by a chemical reaction into a part of the |
| more. Your interaction with the car as a passenger is | | | | molecule of the exhaust gas. And as this exhaust gas |
| very little, you get in sit down, maybe enjoy some | | | | it must leave the car as soon as possible so that the |
| interior accessories and then you get down. Not much | | | | next lot of fresh air and fuel can get into the engine |
| happens other than that. | | | | cylinder. Here is where you can improve performance |
| But if you are an air molecule about to get into the car | | | | by using a cat-back exhaust. |
| then the car is not a small room for you. It is very | | | | To clean up the exhaust gases for the sake of the |
| different. It is more like a long tube that starts with | | | | environment a car has a catalytic converter. And the |
| suction and in the end you get pushed out. In the middle | | | | final portion of the journey beyond the converter is |
| somewhere there is small compartment where an | | | | best done using a cat-back exhaust. A cat-back |
| explosion takes place and everything catches fire. The | | | | enables exhaust gases to leave smoothly and quickly |
| journey of the air molecule is a brief but eventful one. It | | | | so that the back pressure in the engine is reduced and |
| first goes into the air intake and then gets mixed with | | | | the engine can run more efficiently. |