Woah. This thing sounds amazing. What you’re listening to is a Bentley Continental GT fitted with a exhaust system from ARMYTRIX.
A search of google will show you a number of exotic cars with brutal sounding exhaust systems from the firm, whose name is a combination of Army and matrix. Their systems are known for a growly idle sound. ARMYTRIX says this because of the specific way they design their internal chamber of their muffler.
As engine revs climb towards redline, ARMYTRIX’s Valvetronic system shifts exhaust gases into a less baffled, more high flowing path to increase power. A nice feature of the system is that the valves can be controlled at anytime with press of a button from a simple key fob. They also offer a smart phone app that offers the same control over the exhaust system.