Akrapovic Evolution Line Titanium Catback Exhaust System for Audi RS3 Sedan (8Y FL) – Part Number S-AU/TI/28HThis product is constructed with high grade titanium tubes and a muffler, which are attached to the cars stock downpipes with a high quality stainless steel link pipe and finished with handcrafted carbon fiber tailpipes and a titanium inner sleeve. Weighing in at 36. 2% lighter than the standard setup, this system provides power gains of 7. 5 kW (10. 2 hp) at 5,450 rpm and torque increases of 8. 8 Nm at 3,900 rpm (when tested on The Akrapovic dyno