Porsche?s decision to switch the 718 generation of the Boxster and Cayman to a turbocharged flat-four engine?in place of the old Boxman?s naturally aspirated flat-six?had many people wondering how the company?s Motorsport division would create the next bonkers Cayman GT4 around this new motor. (The previous GT4 is pictured here.)
The answer is that it won?t. Instead it seems certain the next GT4, which may wear the supplemental RS branding the division reserves for its hardest-core variants, won?t be turbocharged at all and will stick with a naturally aspirated six.

The reason is as much ideological as it to do with performance, with GT development boss Andreas Preuninger telling us the belief is that natural aspiration is simply better suited to the division?s road cars. While he refused to divulge the technical details of any future model when we spoke to him at the launch of the new 911 GT3, it?s fair to say he dropped as many clues as an episode of Columbo. ?Natural aspiration is one of our main selling propositions,? Preuninger said. ?We offer a car for people who want to feel something special, who want to have as much emotion as possible, as much throttle response and immediacy from a sports-car engine. And at Motorsport we think that can be achieved a little bit better with a [naturally aspirated] high-revving engine than any kind of turbo.?
Which raises the interesting question of what will power the next GT4, which on Porsche?s carefully timetabled model plan ...