After years of speculation, Subaru ... The WRX STI S210 sports the same 2.4-liter turbocharged flat-four as the standard WRX but with enhancements like a revised intake, an upgraded exhaust ...

Subaru uses the same 2.4-liter turbocharged flat-four as the WRX, but it’s fitted with a new intake and exhaust alongside a unique ECU tune for some extra power. Subaru lists output at 296 ...

The Subaru WRX STI gains ... compared to the rest of the WRX lineup. The power boost was achieved thanks to a new intake system, a pre-turbo duct, an exhaust with a low-back pressure muffler ...

Powering the WRX STI S210 is a 2.4-liter turbocharged four-cylinder boxer that sports a reworked intake, exhaust, and engine controller. Subaru is previewing the next iteration of its popular S ...