Your car's engine performs best when it gets clean fresh cool air. And therefore the air getting into your car's engine gets very nice treatment. It is welcomed with open arms so to say and cleaned and if you are concerned about it getting warm you may have opted for a cold air intake as well. And it is then carefully mixed with the right amount of fuel, and once that is done the air and fuel mixture is fed into the engine's cylinder and then it is exploded.
However once the air and fuel mixture is exploded the great treatment that the air got when it came into the engine changes. Now it has become an exhaust gas which must be quickly got rid of. And therefore the engine tries to shove it out through the silencer and the catalytic converter so that the next lot of air and fuel mixture can get it. But trying to shove the exhaust gases out is not a very elegant thing to do and this inelegance has a cost.
The exhaust gases being just shoved out are not able to leave as quickly as the engine would like them to and the result is a back pressure build up. This pressure offers resistance to the engine and some of the energy generated by the engine goes towards overcoming this back pressure. Which is energy wasted as far as driving your car in concerned because had the back pressure been much less then that energy saved could have been used to drive the car.
So how can the exhaust gases be helped to leave more quickly? The answer is with the help of aftermarket exhausts. These are specially designed to enable the exhaust gases to flow quickly in an unhindered manner and exit from the car. This reduces the back pressure and helps improve the engine performance.
You can choose an aftermarket exhaust conveniently by going online. You will find that you have a choice of products available and that too at an attractive price. You can quickly make comparisons and arrive at a confident decision. You can see the latest aftermarket exhausts at www.ilovebodykits.com.