2004-21 Subaru WRX STi | 2002-2014 Impreza WRX T-304 Up-Pipe

An up pipe is a component in a turbocharged engine that connects the exhaust manifold to the turbocharger. It is usually made of metal tubing and is designed to withstand high temperatures and pressure. The up pipe's primary function is to channel exhaust gases from the engine's cylinders to the turbocharger, where they can be used to spin the turbine and compress air for the engine's combustion process. In some performance-oriented applications, an upgraded up pipe may be used to improve exhaust flow and increase turbocharger response.