This Video is not from a Porsche 992, but the sound is identical to the Porsche 992 GT3 RS.
992 GT3 - RS rear silencer flap replacement pipe on series manifold catalytic converter Porsche 911.
This system is mounted in place of the series 992 GT3 rear silencer. The system creates a martial racing car sound and can be controlled with the built-in, electric flap system.
As described, this system is mounted on the series catalytic converter manifold and thus offers a cost-effective alternative to the complete exhaust systems available on the market.