2011 WRX STI Spec C launched in Japan with 2011 updates first seen on 2011 models.
http://www.4wheelsnews.com/2011-suba...tos-and-specs/
From the details, there seem to be no change mechanically from the 2009 model.
http://www.4wheelsnews.com/2011-suba...tos-and-specs/
From the details, there seem to be no change mechanically from the 2009 model.