Change History

"It sure will sound faster, even compared to an S with the Sport exhaust. That's because the GTS is the only Boxster/Cayman to get what Porsche calls a sound symposer along with the tailpipe butterfly valves. The symposer routes sound from the engine's intake to a vent-like grate behind your seat. Yeah, it's a sound tube, but it's the best sound tube I've ever heard. And I was already sold on the basic Sport exhaust before this improvement."

http://www.roadandtrack.com/new-cars/first-drives/reviews/a6323/2015-porsche-cayman-boxster-s-and-gts-first-drive-road-test-review/

http://www.planet-9.com/981-cayman-and-boxster-modifications/96990-i-want-sound-symposer.html

http://www.caranddriver.com/features/faking-it-engine-sound-enhancement-explained-tech-dept

"It sure will sound faster, even compared to an S with the Sport exhaust. That's because the GTS is the only Boxster/Cayman to get what Porsche calls a sound symposer along with the tailpipe butterfly valves. The symposer routes sound from the engine's intake to a vent-like grate behind your seat. Yeah, it's a sound tube, but it's the best sound tube I've ever heard. And I was already sold on the basic Sport exhaust before this improvement."

http://www.roadandtrack.com/new-cars/first-drives/reviews/a6323/2015-porsche-cayman-boxster-s-and-gts-first-drive-road-test-review/

http://www.planet-9.com/981-cayman-and-boxster-modifications/96990-i-want-sound-symposer.html