i have an 09 impreza /2.5I / 5spd hatchback
was wondering if anyone has installed a super charger /what kid did you use and what other parts were needed

 

superchargers have been done, but for what it's going to cost you you'll save money just selling the car and buying a WRX in the long run.

Your n/a engine won't take much in the way of boost before collapsing on itself, the fuel setup can't supply enough petrol to fuel it, the exhaust will be too restrictive etc.

 

i have headers / 3' exhaust / bigger injectors and deletes