Exhaust Systems?

Question

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?

Answer 1

Simply put, it takes energy to push the exhaust gases out the exhaust system, so the less restrictive, best freeflowing exhaust systems mean the less energy is wasted getting the exhaust gases out the tailpipe, that saved energy translates into more energy (power, HP) for you at the gas pedal and also more fuel economy if you don't let that extra power go to your head and cause you to press harder on that gas pedal all the time. I'm more familiar with older cars without catalytic converters and other pollution control junk. Today exhaust systems must be harder to alter because of emissions and all the computer stuff. I imagine probably that most exhaust system changes kids make to their cars are no more then muffler changes, after market mufflers probably are less restrictive and louder, better sounding. Probably they don't improve power or economy all that much, just sound good, in older muscle cars the thing was to change the single exhaust to duel and install headers, headers are nothing more then a single separate pipe to each cylinder which joined together into one pipe to the muffler http://images.google.com/imgres?imgurl=http://www.hi-upload.com/uploaded1/DSCF1765.JPG&imgrefurl=http://www.hondahookup.com/forums/showthread.php%3Ft%3D104777&h=480&w=640&sz=101&hl=en&start=13&tbnid=GZNPKaR_tkZHgM:&tbnh=101&tbnw=135&prev=/images%3Fq%3Dengine%2Bheaders%26svnum%3D10%26hl%3Den%26lr%3D%26rls%3DGGIC,GGIC:2006-23,GGIC:en%26sa%3DN

Answer 2

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.

Answer 3

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.

Answer 4

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.

Answer 5

first of all you didnt point out what variety of vehicle you have.it fairly is extremely significant because of the fact some autos won't teach plenty, if any progression by way of including a chilly air intake.additionally,if its a vehicle which will respond properly to a chilly air intake,then probability is that putting headers and a overall performance exhaust additionally will provide you greater capability.as some distance because of the fact the noise point of the exhaust you are able to go with how loud you go with it to be.yet you additionally can ought to do some thing with the pcm so as that it may cope with the gas standards which will substitute as a results of your transformations.

Answer 6

stay with what you got cause the factory puts on what the car calls for and if you put on duel exhaust then all you are doing is wasting your money but if you want a little more horsepower ,if you need exhaust ,then ask the muffler shop if they can put on a little bigger exhaust then it calls for and it wont cost too much more money and maybe you can ask for a turbo muffler too.

Answer 7

Flow master.com Check it out

Answer 8

Go to a forum. Before you screw your car up, read up on back pressure and flow.