Does it lag when you put your foot down & then eventually zooms off? Mine does that. I think my accelerator cable is on its way out. Try tightening your cable.My car seems to have lost all power, it still starts up fine, but pulling off and putting my foot down the car has lost lots of power in all the gears, its hard to explain, it's as if someone has taken out the engine and replced it with an 800cc??