hello i had the ct4s and that was a fast car but only one belt my question is that now i have the ct5 it has two differnt settings the belt that comes with the car is for road and the other belt that comes with it is for racing. the belt that comes on the car is that going to have the same power as the ct4s? i noticed that my ct4s was powerfull when i opened it up. its been a while since i ran it but i was just wondering. maybe i should change belts. what are some good upgrades for the ct5?