To be honest, Subaru's STI Peroformance Concept is what I didn't expect to see at the New York Auto Show. Next to the WRX STI Rallycross Car, this vehicle is a main star at company's stand. The concept is a preview of STI's (meaning Subaru Tecnica International) car performance characteristics. This also signifies for a bunch of tweaks hidden in this car.
For instance, Subaru said that it has changed the body, chassis and air intake and exhaust systems. Even the BRZ Super GT based engine was improved. In other words the STI Performance Concept is a pure example of the engineering prowess and tuning magic of the STI team.
Another thing that this car comes to tell us is that it is the first step of company's plans to expand STI in America. As a matter of fact, STI-engineered parts have already replaced Subaru Performance Tuning (SPT) aftermarket parts in the U.S. There is also the promise to see other STI tuned vehicles in the U.S.
United States will obviously do what's trendy in Japan, since the complete cars with the extensive tuning and performance parts are now on sale in Japan. Precisely, the modified models are the WRX STI, Forester and BRZ. To make this even more visible, Subaru has added "S model" nomenclature for the WRX STI and "tS" on BRZ and Forester.
Unfortunately, there are no additional details released, so everything is up to our imagination.