The automotive exhaust system has three important roles to play. It takes away the harmful and hot gas produced by the engine; it lessens the vehicle's emissions; and it reduces as well as makes the engine noise more favorable. One important component of the vehicle's exhaust system is the muffler. It is vital because the gas produced during the combustion process in the pistons will surely create a tremendously loud noise if it will be sent directly in the environment. As we all know, the engine combustion process comes with a cycle of explosions that produce too much noise. Hence, we have to do something in order to eliminate or trim down such noise.

Most of the automotive mufflers employ baffles so that the exhaust would bounce around and thus dissipate the energy and quiet the noise. There are also mufflers that make use of fiberglass packing which works to absorb the sound energy the moment the gases gush through. Noise dampening can be done by applying 2 major techniques — through absorption and reflection. Each of these methods has their advantages and disadvantages.

The absorber muffler or the unit that uses the absorption technique is made up of a tube that's covered by a sound-absorbing element. This tube is usually perforated in order for some part of the sound wave to go through the hole and into the absorbing material. The said absorbing stuff is composed of steel wool or fiberglass and is safeguarded from its surroundings by a supplementary coat that's molded from a bend metal sheet. This type of muffler delivers low back pressure and simple design. However, this technique is a low sound damping if compared to other methods, particularly during low frequency.

The reflection muffler, on the other hand, employed sound wave reflection in order to make the highest quantity of destructive interferences. Those vehicle mufflers that utilize such technique are frequently used for the reason that they are much better in damping the noise compared to absorber muffler. The drawback of this design, however, is that it normally produces higher back pressure which can consequently trim down engine performance particularly at high rpm's.

If the muffler of your Mercury vehicle has been slowly eaten up by rust, then the best thing you can do is to have it replaced. The marketplace has a plethora of options for replacement Mercury muffler. But when purchasing an automotive muffler, it is always true that you get what you pay for. So if you're planning to get a very satisfying result on your new Mercury muffler, better spend extra bucks on it and acquire a high-performance and high-quality unit. And that's exactly the kind of Mercury mufflers offered here at Parts Train. The Mercury muffler that Parts Train carries is no less than a good investment.