Can someone please explain to me the importance of the type of exhaust system that you have. I‘m having trouble understanding why people always upgrade to performance exhaust systems. I‘m trying to learn all I can about cars! Where‘s a good to place to start if I want to get a better exhaust?
Ok, the cylinders in your car are moved up and down by small explosions caused when gasoline is ignited in your motor, but you also need oxygen for the gasoline to properly detonate. So your car sucks in air from the atmosphere to do this and the more cool air the better the explosion, better explosions mean more power which means more efficiency and better gas milage. After the explosion takes place what you have left is the gases that the burnt up gasoline and oxygen left behind. Well that gas leaves your car by way of the exhaust system. Now if your exhaust system doesn't easily let all this gas out then the next time your car tries to ignite the gasoline it will suck in air, but it won't be able to suck in as much because their is also the exhaust gasses in the chamber as well. So if you install a more efficient exhaust system in your car then it can better remove the exhaust gasses from your engine and your car can take in more air for a better gasoline detonation. Hope this helps.
Exhaust systems are usually well designed from the factory. The real reason to change your exhaust is to compliment engine upgrades. But, if your upgrades don't up the HP by at least 50 horsepower, a new exhaust is a waste of money, performance wise. Most new exhaust systems sound LOUDER, but do little for performance.
Gas flow through the cylinder head is an important factor in performance. You can only get in what you can get out. This means that the intake, camshaft and exhaust should be modified as a total project. Also the out going exhaust gas assists in creating a higher vacuum in the cylinder on the intake stroke to give a greater fuel charge. Jules, auto/tech. Australia.
