+ 11 hp & + 10 tq gain. - 2 3/4 tubing (70mm). - 18 lb. (8.5 kg)weight savings over OEM center muffler. - German v2a - x5crni18-10 - 1.4301 stainless steel for improved durability. - absolutely no drone in the cabin. - does not interfere with emissions and will not trigger the check engine light. - ecu programming (software) is not necessary. - replaces OEM center muffler and connects to OEM header and OEM side mufflers and OEM tips. Please note: this muffler is a direct replacement the 991 Carrera s (3.8l - us model) which comes standard with valves. It is also a direct replacement for the Porsche sport exhaust option. This center muffler bypass for the 991 is one of the most technically advanced for Porsche to date. Our muffler incorporates an x pipe design to dampen and eliminate unwanted frequencies otherwise known as drone and gives the system the added benefit of increased torque in the mid-range. By removing the factory center muffler you gain higher gas velocities, present much less flow restriction which translates into larger horsepower gains at higher rpms. With the valves open you experience aggressive gurgling sounds with low, deep tones in lower rpms and a formula one scream at higher rpms. You can reuse the factory exhaust tips or add our beautiful stainless FVD tips, part # bes 991 160 00s. The FVD tip design fit 's the factory cut outs in the bumper perfectly and adds an aggressive appearance that matches the sound!

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.