Loud though it may be, Porsche’s track-focused is gifted with the right kind of loudness, not the fart can-type setup that everyone hates. That loudness can be improved with a premium aftermarket exhaust such as the Dundon Motorsports Street Header Exhaust Power Package, which is listed by the manufacturer and Vivid Racing at $13,490 sans extras.
First things first, this aftermarket solution improves wheel horsepower from 448 to 476, as per Dundon Motorsports. It also happens to be a bit lighter, given that the headers and stainless steel and the muffler comes in either stainless steel, titanium, or Inconel. A bolt-on solution that features high-flow cats and electronic valves for comfortable highway cruising, this exhaust package comes with either PVD black or titanium tips.
The before and after comparison speaks volumes, with the GT3 sounding like it’s powered by a swarm of angry mosquitos. The secret to these fabulous exhaust sounds isn’t the exhaust, though, but the engine.
Porsche transferred motorsport technology into a production model by means of a free-breathing 4.0L boxer derived from the 911 GT3 R and 911 GT3 Cup. Rated at 510 ps (503 horsepower) and 470 Nm (347 pound-foot) of torque, this engine will gladly spin to 9,000 revolutions per minute.