2015 Subaru WRX STI Prototype Testing on the Nurburgring

http://www.torquenews.com/1084/upgraded-20-liter-subaru-wrx-sti-prototype-being-tested-sti
WRX STI prototype
Here’s what we know about this new WRX STI prototype. Automobile reports that is comes with Brembo brakes with six-puck calipers up front, plus a cat-back exhaust system. This special STI is powered by a 2.0-liter turbo boxer engine that’s the same powerplant as the model sold in Japan. The current production 2.0-liter WRX STI sold in Japan produces 304hp and 311 lb ft of torque.
STI told Automobile, the 2.0-liter boxer in this STI prototype has been upgraded with blueprinted internals, a set of carefully weighed and balanced pistons, and a larger capacity ball-bearing turbocharger. STI says it pumps out well over 300 horsepower. This is the same 2.0-liter direct injection turbo "DIT" boxer engine Subaru runs in the U.S. spec WRX, but with a lot more performance upgrades.image.jpg
 

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