SpeedART Sport Exhaust w/ RS Quad Tips Porsche 997 Turbo

997 Turbo Sport exhaust with 200 cell cats and 2x80 mm twin tail pipes for deeper throaty sound and weight reduction adding 15hp based on European dyno. The speedART 997 Turbo with just the mufflers made 507hp to the wheels. Uses stock tips. ECU update adds extra to maximize for increased air-flow. approximately 540hp.