RENNtech | Stainless Steel Sport Mufflers w/Electronic Valves | C63 /S AMG | W205 | 4.0L BiTurbo V8 | M177 audi-s7--4g---2012-2018--4-0l-v8-twinturbo-esr9168828 93+ Octane gasoline is mandatory

93+ Octane gasoline is mandatory with this Performance Package

We have found the new M133 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz

With the proprietary RENNtech ECU Tuning the C190 AMG GT gains up to +95 HP and +131 LB-FT

Total-Gains: +26HP & +33TQ

W/S212 - E 63 AMG | C218 - CLS 63 AMG | RWD - Non-4MATIC

RENNtech | Stainless Steel Sport Mufflers w/Electronic Valves | C63 /S AMG | W205 | 4.0L BiTurbo V8 | M177 audi-s7--4g---2012-2018--4-0l-v8-twinturbo-esr9168828 93+ Octane gasoline is mandatoryRENNtech Stainless Steel Sport Mufflers w Eclectronic Valves for the W205 C 63 AMG BiTurbo. Gains: up to 10 HP & 15 TQ. RENNtech Sport Mufflers are made out of T 304 stainless steel (SS) and 100% hand crafted in the USA. This exhaust system is rigorously tested to remove any unwanted resonances in the cabin to deliver a deep sound that keeps with the character of a luxury performance vehicle. Our mufflers with 2 3 4 inch diameter tubing offer lighter