During our holiday in Monaco last summer we saw two very loud Porsche 991 GT2 RS. These GT2 RS have been fitted with a custom exhaust system and the purple one has 810HP. We also saw one in The Netherlands during the StreetGasm Herfstrit which was fitted with iPE downpipes. In this video you can see them making a couple accelerations and you can hear the lovely turbo whistle sound while driving in Monaco.