Fi Exhaust Front Pipe + Mid X-Pipe + Valvetronic Muffler + Quad Silver Tips (Retains OEM Valve Settings - No Remote) - Porsche 971 Panamera S 2017-2024Elevate the performance and sound of your 971 Panamera S 2. 9TT with Fi Exhausts premium front pipe, mid X pipe, and Valvetronic muffler system. This setup is engineered to reduce backpressure, improve turbo responsiveness, and deliver a deeper, more refined exhaust tone across the rev range. The mid X pipe enhances exhaust scavenging for smoother flow and a balanced, sporty note, while the Valvetronic muffler retains full OEM valve