The Subaru STI has an almost cryptic meaning, but the breakdown of the WRX is the World Rally experimental. The STI stands for Subaru Tecnica International. Subaru STI is a better model of the WRX, which has improved transmissions and suspensions. The Subaru STI is manufactured by the Fuji division of Subaru that handles the production of sports vehicles. The Fuji team worked on the first WRX Impreza in the 1990s. The car features a direct-injection turbocharged Boxer engine and a performance variation package. It first debuted in the Tokyo Auto Show in 2007 and was an improved version built on the WRX platform. The model manufactured in Japan features a 2.0-liter engine with a turbocharger generating 227kW.