Well every little bit counts right? Pulley kit, TVT intake, chip, and exhaust you'd be looking at about 30 to 40hp altogether no? Thats pretty decent and would definitely give you better accelleration. I mean stock Sub WRX has 227 stock and is quick. With these mods the Xfire would have more. Xfire gets bagged on for no reason, with just a couple mods you match a WRX which is always put on a pedestal.