https://www.cnet.com/roadshow/news/2019-subaru-wrx-sti-s209-detroit-auto-show/ > The engine also gets a high-flow fuel pump and larger fuel injectors. In a nod to the 2004-07 WRX STI, the S209 even gets an intercooler water spray system, operated via steering wheel paddles. (The old STI, for reference, had a button to the left of its steering wheel.) > The giant wing turns to carbon fiber on the STI S209.