Subaru Tecnica International
Subaru Tecnica International (in Japanese: スバルテクニカインターナショナル株式会社, romanized: Subaru Tekunika Intānashonaru Kabushiki-gaisha), or STI (prior to 2006, STi), is the Subaru Corporation's motorsports division. STI, along with Prodrive of the UK, specialized in the preparation of a variety of vehicles for the Subaru World Rally Team which competed in the World Rally Championship (WRC).
Source: Wikipedia — Subaru Tecnica International (CC BY-SA 4.0)