AWE Tuning AWE SwitchPath Exhaust for Porsche 991 - PSE cars - Chrome Silver Tips - 3025-42010This is the finest exhaust available for the PSE equipped Porsche 991 Carrera and Carrera 4. Period. The AWE SwitchPath Exhaust for the Porsche 991 is for those looking to increase power and bring out the note of their 3. 4L power plant, without turning their backs on perfect daily drivability and Porsche sophistication. The AWE Porsche 991 SwitchPath Exhaust includes integrated valves designed to afford drivers the best of both worlds: A Track