You don't think the turbo charger is working at maximum or not at all? I haven't had the car for more than a year so if it wasn't working at all since I have had the car then I wouldn't know for certain but I have test driven a NA model and it was much slower than the one I have now so I can see where it might not be working at maximum. Also I don't know when the turbo charger is SUPPOSED to kick in but I know about half a second after I hit the accelerator I can feel the car leaning back and you can hear the suction noise of the turbo charging atleast spinning the spindle or whatever it is that turns inside it, if not cramming air back into the engine. How can I test the turbo charger in case it isn't working at all or at max?