Fitting Porsche Motorsport’s beloved 4.0-liter flat-six in a 718 Cayman required the automaker to redesign the intake. In addition to the typical intakes behind the doors, there are new intakes replacing the Cayman’s rear quarter windows. They might be the coolest part of the whole car.
The runners from those intakes actually pass through the cabin, just behind the seats, into a giant airbox that sticks out from the rear parcel shelf. The intake manifold itself is variable length, and as with the current 911 GT3, the GT4 RS has individual throttle bodies, though they are now vertical instead of horizontal.
Basically, the cabin of the GT4 RS will be a resonance chamber for the most sonorous of flat-sixes. “You can orchestrate the noise like a conductor,” Andreas Preuninger, head of Porsche GT cars, tells us. “The intake noise is all real. There’s nothing synthetic. There’s nothing coming from some speakers—it’s how it is. And you hear the air rushing in creating these burbles and these noises depending on your load and depending on the RPMs. It’s so entertaining.”
For the full story, check out this article from Road & Track.