Armytrix has uploaded a video on their channel in YouTube, featuring a Porsche 911 Carrera 4.with their exhaust system, which helps the car sound very powerful. To remind you the Carrera 4 is equipped with an engine producing 350 hp at 7,400 rpm that enables it to do the 0-100 km/h in 4.9 seconds and to have a top speed of 285 km/h.
