If you're into that kind of thing.
We'll never quite understand why people feel the need to make a Porsche 911 GT3 louder. The car is designed to impress, sure, but in the sense that it will pass everything else on the track. If you want attention off the track, there are plenty of other cars more specifically made for this purpose, which would probably benefit better from being made louder. Nonetheless, there is still an option for those who want it in the shape of the iPE Innotech race exhaust. And the system is indeed quite loud.
We don't get it, but it's not like it was an especially subtle car to begin with.