Porsche 992 Dual Valve Controller Exterior Bolt-on turbo-back exhaust system providing

Bolt-on turbo-back exhaust system providing great sports car sound and improved exhaust flow

Fits Ferrari 360 Modena

Complete high-performance exhaust solution for the Ferrari 458 Italia

F8 Tributo

Fits all Porsche 991 GT3 / GT3 RS vehicles 2014-2016

Porsche 992 Dual Valve Controller Exterior Bolt-on turbo-back exhaust system providingFrom the factory, your Porsche's valve system has a limitation, but with the KIES Valve Controller, you can take control! At a standstill and at lower RPMs, your car is programmed to partially close the exhaust valves, even when you have them OPEN. With the KIES Valve Controller, you can take control to fully open the valves to enhance the flow and the sound from your exhaust. In many cases, we've found that customers with PSE (Porsche Sport Exhausts)