Akrapovic slip-on-race exhaust, Including OPF, gives the car a deep, racy sound.

The remote control of the exhaust flaps (in this case Cargraphic valves control) ensures the opening of the flaps even between 2.8-4K RPM, when Porsche automatically is closing the flaps even in the case of open flaps on the GT4 center console. You get full sound in the cab and outside even at lower revolutions.
The controller has 2 positions: 1-always open flaps 2-automatic control of flaps by Porsche (Incl. the possibility of their complete switch-off)

The sound was recorded using the Zoom H5 stereo recorder in the interior of the GT4.
Noise measurement: iPhone decibel meter

Cargraphic valves control for GT4 718
https://www.cargraphic.de/en/your-veh...

Comparison of the exhaust sound - OEM vs. Akrapovic Slip-race titanium
   • Porsche 718 GT4 AKRAPOVIC exhaust vs OEM