These are the latest winter spy pictures of the all-new Porsche 911 Turbo. Porsche is set to ramp up the already potent power output, crushing in-gear performance and overall economy of the current model through the adoption of a new tri-turbo system for its existing 3.8-litre, horizontally opposed six-cylinder engine.
The firm plans to replace the twin-turbo set-up of today’s 911 Turbo with a complex triple-turbo induction process similar to that employed by BMW M’s new six-cylinder diesel-powered M550d xDrive and X5 and X6 xDrive50d models.
Porsche’s new system is undergoing its final phase of development in the back of engineering prototypes of the new top-of-the-line 991.
As revealed in a series of recent patent applications made by the German car maker, the Porsche system uses three individual turbochargers. One smaller unit is mounted close to the engine to boost low-end response together with two larger ones similar to the Borg Warner units in use today.
As well as increasing overall power and providing a more linear delivery at the lower end of the rev range, the new induction process is also claimed to improve efficiency — something well placed Weissach sources suggest will bring about significant fuel savings.