SubaruSubaru is internationally known for their use of boxer engines in most of their vehicles above 1500cc as well as their proponence of the all wheel drive drivetrain layout, which became standard in most international markets as of 1996. They also offer many turbocharged versions of their passenger cars, such as the Impreza WRX.
Subaru Impreza WRX STIThe J-spec version has a 2.0L 304*bhp (227*kW; 308*PS) EJ207 engine with a Twin scrol turbocharger, while other versions of the car have a 2.5L 305*bhp (227*kW; 309*PS) EJ257 engine with a single-scroll VF48 turbocharger.
Subaru EJ engineEJ257 DOHC 16 valve turbo. Originally designed for the NA Impreza STI in 2004 with AVCS and DBW Same exact shortblock as EJ255. Subaru of America designates the same part numbers for an EJ255 shortblock, and EJ257 shortblock Usage: US Market Impreza WRX STi MY04~MY07 (300 hp, 293 hp (New SAE standard)) US Market Impreza WRX STI MY08~MY10 (305 hp (New SAE standard)) Asian, European Market Impreza WRX STi 05~present (280 hp, 40KGh/m)