Upgrading the restrictive factory downpipe with the APR Cast Downpipe Exhaust System is a great way to increase performance and add a sophisticated growl to the exhaust note. Ideal performance is achieved through expelling exhaust gasses at maximum velocity through APR's proprietary, low-turbulence, investment cast downpipe. Designed and assembled in-house, the system utilizes only premium materials and world-class manufacturing techniques to deliver unmatched quality and reliability
The factory downpipe system consists of smaller, 63mm piping with varying bends and multiple restrictive high-cell-count catalysts, all of which contribute to a less than ideal flow path and hindered performance. APR's engineers took a multi-step approach to maximizing flow, reducing under hood temperature, and eliminating unnecessary restrictions all in a unique package only APR can deliver.
The exhaust system features a strong, investment cast, T304 inlet and outlet designed to maximize flow and minimize turbulence. By casting the inlet, APR's engineers were able to create a smooth and high-flow exhaust path that maximized flow through swept blends and shapes that are otherwise not possible through conventional fabrication techniques. The inlet perfectly matches the factory turbocharger's 77mm outlet and gradually necks down over a long distance to further enhance performance. The mounting flange and bracket are integrated into the casting, and TIG welding at the flex section ensures a clean inner surface eliminating turbulence, vortices and eddies to the highest degree.
Volkswagen Golf / GTI / PP / Clubsport (MK7 / A7 / Typ 5G) - 1.8T & 2.0T - 6MT & DSG - FWD & E-Differential - LHD & RHD - DPK0004 - $759.99
Audi A3 (8V / MK3) - 1.8T & 2.0T - 6MT & S-Tronic - FWD & E-Differential - LHD & RHD - DPK0004 - $759.99