Subaru STI C CGI
This model retains the same engine as the previous generation STI, which is an EJ257 with dual AVCS however with modifications to the ECU which have increased fuel economy slightly, and has given a 6 kW boost in power to 227 kW (310 HP). Torque however has dropped from 407Nm to 394Nm. There are also reports that along with the ECU changes, the rev limit was raised to 7100rpm to support the power increase at the upper rev range to support a stronger top end. It also retains a hydraulic power steering system as opposed to the WRX's new electric-assisted rack. The steering rack was changed to a quicker 13:1 ratio, as used in the Japan delivered vehicles, as opposed to the 15:1 ratio of the previous models. Also the EJ207 that is standard for JDM STI's has been retained specifically for the Japanese market in the new 2015 WRX STI. A sound tube device, also seen on the BRZ, has also been fitted to the air intake system to channel certain induction and turbo frequencies into the cabin, reports show this is only fitted to vehicles in some markets. In Europe and Australia, STI is available with and without the wing.
