The Bisimoto Pulse chamber system is now available for your Porsche 911 (991.1) from 2011 to 2015, non-turbo models. 14+hp, with a nice, deep, race inspired tone, and 32 pounds in weight savings. Stainless steel construction, and hand made.
No drone, and retains the factory tips for that stealth, OEM look. Come in a paired set, and requires bumper removal for installation.