The bottom line is, Porsche’s all turbo lineup of boxer four-cylinder engines will replace flat-sixes in all but the highest-tier, limited-edition cars.
Boxster and Cayman turbocharged flat fours will have between 240 and 370 HP, per Road & Track magazine:
Here’s how the pie is being cut: base model cars should see 240 hp from their single-turbo two-liter. Step up to an “S” and displacement jumps to 2.5 liters, and output would be 300 hp. GTS models would receive a 370 hp 2.5-liter, a little below what Porsche CEO Mattias Müller indicated would be the theoretical maximum output of a turbo flat four in the Boxman.?
Car & Driver reports:
Only the ultra-high-performance Boxster Spyder and Cayman GT4 are said to retain their naturally aspirated flat-six engine, a 3.8-liter unit. Which is sure to make them even more highly desired than they already are. Meanwhile, one has to wonder whether the base, S, and GTS versions of the current Boxster/Cayman are destined to become depreciation-proof used cars, in the same vein as the final air-cooled 911 models.