From the same folks who showed us the first 9ff Panamera video, this second video (still in poor quality) demonstrates once again 9ff's valve controlled sport exhaust system.  Intended to control noise volume, there are two settings: loud and quiet.  Obviously, in the "loud" setting we can hear the raspy V8 turbo revving just before launching down the lonely back road.  But that's not all.  Just when you think the video is over, the 9ff Panamera PT-55, which is equipped with 22-inch wheels, lowered suspension and 550hp, gives the stationary camera a nice fly by.