hi guys I need help. i have a 2010 madaspeed 3. I just have a GFB BOV. my turbo when its winding up. its making a "super charged" noise. I bought the car about 3 months ago. i have driven other gens and mines it feels its not as fast as the others. I'm not sure whats going on. i have yet to buy a turbo because some mechanics are saying its a bearing. i just want to hear your thoughts.