997 Carrera S Performance Upgrades Featuring SOUL, GIAC, BMC & Numeric Racing
Modern Porsches are no stranger to valve-actuated dual-mode exhaust systems right from the factory, but that doesn't mean they're able to fully satisfy the eardrums of every 911 enthusiast. SOUL Performance's Valved Exhaust for the 997 Carrera--in this instance a 997.1 Carrera S--gives the driver a modest bump in sound quality...