All I know in tuning is that if you want to go faster around the corner, you want a tiny little bit of oversteer. Not too much. Also, make your tires have more air than less air so they can help grab the road. Another thing is about camber, don't put it extremely high because that causes understeer. The lower the car, the stiffer the suspension should be. One thing I do to save weight (this sort of works) is give myself less gas in the car. Kind of works. You still might be better off with other websites.