I hope you are not expecting the shift kit to give you the "tire chirping" performance like the one you would put in a Camaro or Mustang. Just think of the shift kit for our ATX like a shift "improver" kit, it contains parts that probably should have been installed from the factory. Think of it as a way to get more life out of your transmission. I have it installed and did not really notice a difference, but supposedly it is suppose to help extend the life of the transmission. Hope that answers some of your questions.