2018 Porsche 911 GT2 RS - The way the power is delivered on the twin-turbocharged GT2 RS is massively different to that of the normally aspirated 911 GT3 RS I drove just a few weeks ago on the Grand Prix circuit at the Nurburgring. The GT3 RS is high-strung with a piercing wail and maximum power at high rpm. There is less aural drama with the GT2 RS, but the speed builds incredibly quickly.