Exhaust mufflers are part of exhaust systems that expel gases from the engine, reduce noise and minimize emission of pollutant gases.

The sound of engine can be controlled or altered with specific type of exhaust mufflers. Motorists like a deep sound, but not thunderous sound. If you like to attract the attention of the whole city, choose the muffler that gives out a bombing sound. If you are of the quiet driver, choose the exhaust mufflers that deaden most of the sound and additional horsepower with improved torque.

Exhaust mufflers along with the exhaust system can affect the performance of the engine. Though, in cars, exhaust mufflers are tucked away on the bottom side, they still do great work, even though you do not notice its presence.

Technology of exhaust mufflers is mainly of two types. The one that passes the emissions through baffled chambers, where the opposite waves cancel the sound out and another one that passes the emissions through a straight, perforated pipe that contains sound absorbing materials. The latter type doesn’t exert backpressure.

Hundreds of new designs for exhaust mufflers come up that reduces the sound, amplifies the sound or tones the sound for some effects of deep engine sound. Resonator is another part that works alongside exhaust mufflers to reduce sound. A superior exhaust system can pump up engine efficiency. But pushing the exhaust quickly out of the way, the engine receives more air from the intake system, thereby facilitation faster, more efficient burning of the fuel.

Having good exhaust mufflers and exhaust systems installed in your vehicle is also important to the longevity of the vehicle and engine life.