Hi everyone, I am a new member here, and joined to ask this question, and in the future become a more active member. Im looking into buying either a WRX or STI in a few months. I know that the STI is a lot faster then the WRX, but what makes it this way? Did Subaru just throw a bigger turbo into a WRX and call it an STI? The reason why I ask is, if the differences are as simple as a bigger turbo, the I would just buy a WRX and put in a bigger turbo myself. Thanks in advance for the information.