Gran Turismo 4 Cheats

After you win the el capitan 200 miles in the endurance hall you will win a Toyota Minolta race car. Go to toyota tune shop buy everything MAX. then go to power and speed (top right) and go to max speed. then when you get there go to the tool box (settings) and put the nitrous the max then go to suspension and set the ride height and spring rate to the lowest possible value and turn the stabilizers to 1. then go to transmission set the auto to 25 and the final gear to 2.899. then go to weight balance and set it to +50. after you finished enter the race and go until you hit the backstretch then use the nitrous and watch the car and the mph gauge rise.

Buy a buick special musle car. Give it around 600 hp. Then give it all othe hop ups. Your car will be so fast you can outrun ford gt race cars.