[Video] This straight-pipe 911 GT3 R is ear-splitting | GRR

There’s something ferociously harsh about Porsche’s racing flat-six engines. Regulation changes in various series around the world have seen some of the fastest race-ready 911s get quieter over the last couple of years, but there are still cars around that will entirely write off an ear drum if you’re standing trackside and one flies by. The 991.2 GT3 R is such a machine.