Resonators and Mufflers
Both of these components are about reducing noise pollution to an acceptable level.
A resonator is a part of the system that encases part of the exhaust pipe designed to reduce certain noise frequencies in the system.
A muffler has exhaust gas flowing through it and internally it redirects the gas through a series of chambers designed to reduce the noise emitted at the tailpipe.
These are the basic components of an exhaust system.
With the requirement to decrease harmful emissions entering the atmosphere, required increases in fuel economy, there are various other exhaust components that play a vital role in the correct operation of your engine and its exhaust.
Modern exhaust systems are monitored, delivering information to the computer of your car, reacting to different climatic conditions and driving situations, so a correctly operating system is vital.
A fault in the system will alter the data sent to the computer and change the efficiency and performance of your vehicle.