<Table> <Tr> <Td> </Td> <Td> The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject . You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate . (June 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject . You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate . (June 2011) (Learn how and when to remove this template message) </Td> </Tr> <P> An exhaust system is usually piping used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove . The entire system conveys burnt gases from the engine and includes one or more exhaust pipes . Depending on the overall system design, the exhaust gas may flow through one or more of: </P> <Ul> <Li> Cylinder head and exhaust manifold </Li> <Li> A turbocharger to increase engine power . </Li> <Li> A catalytic converter to reduce air pollution . </Li> <Li> A muffler (North America) / silencer (UK / India), to reduce noise . </Li> </Ul>

What is the middle part of the exhaust called