Believe it or not, wheels & tires... This is simple enough anyone can do it!Check out the original equipment tires... note the diameter of that tire.
www.tirerack.com gives these dimensions so you needn't go measuring on the car itself.Any change to the overall diameter of the tire will be just like changing final drive ratio of your transaxle. The larger the diameter, the faster the car will go at the same engine rpm. Or, at the same speed your engine rpm will decrease.Now look at all the power curves hot rod shops are posting... every improvement seems to develop more horsepower at higher engine rpm. Your engine develops more horsepower higher up the rpm curve too so why not increase your engine rpms for the current setup by decreasing the tire diameter one or two inches?Sure, with every rpm increase your fuel economy goes down but you are looking for horsepower which means more fuel. With smaller diameter tires you will have more acceleration too.Just beware, your speedometer will no longer read correctly unless you get it calibrated for the new setup. It's easy to acknowledge the difference and drive accordingly.Good luck