Subaru Racing Engine

Now this is interesting, it's Subaru's new FA20DIT for Le Mans Prototypes. It's a 1.6 turbo charged boxer engine based on the standard block. It also has a proprietary "Pseudo Adiabatic" combustion process which is said to make it highly fuel and aerodynamically efficient. Revolutionary Technologies United (RTU) is behind this 550bhp project.

Subaru Racing Engine

(Via Race Car Engineering)