I didn't really think that my mods made a big difference on my car, untill I lined up against a friend of mine with a stock ES GT and asked him to race me with everything he had. (5 Sp. V.S 5 Sp.)
I thought maybe I would just barely beat him.
I had him by at least a car length! It just goes to show you that we are not wasting our money

 

i did the same thing with my sister, we both have a 1.6 litre pro, her's is stock, i hade intake, exhaust, ACT clutch, i beat her car by atleast 1 1/2 car lenghts. so it does make a small diffrence. good kill man.