An exhaust system works through an impetus substance that has the ability of changing over concoction mixes. The two-way converter performs in two ways. One is the oxidation of carbon monoxide to carbon dioxide through Oxidation Catalyst. Another way which is at the same time being finished by the first is the oxidation of unburned hydrocarbons to carbon dioxide and water. In reality even the incompletely consumed fuel is being dealt with by this procedure. The three-route converter then again works in three ways at the same time. This diminishes the nitrogen oxides to nitrogen and oxygen, while doing the oxidation of carbon monoxide to carbon dioxide and oxidation of unburned hydrocarbons to carbon dioxide and water.