Quick cash
Once you have obtained the I-B license, buy a decent car with under 394 HP (I used a tuned up Mitsubishi Lancer GSR VI). Once you have done this, go to the 80's Sports Car Cup, under Special Events. Go to the fifth race in this cup (Tahiti Road). Tahiti road is an easy track to win at, and every time you win, you recieve 10000 cash and a Nissan Skyline worth 125,000 credits. You may not want to sell it though. It has 555 HP and a Maz Speed of 190 MPH. Consider winning this race multiple times, and selling all of the cars but one.
Unlimited Money and all Cars
Enter the Gran Turismo mode. Go into your garage and get into a Dodge Viper R/10 in the blue colour. (you can get this car at Chrisler) go and start the Sunday Cup you will need a B-Licence for this. When you are Racing do the first lap without coming of the Track as soon as you did the first lap turn around and drive the other direction.
Do that one lap without comming of the track once. After you done that pause the game and press L1+R1+cross+up+down and then quit the race. Go to the garage and change your car to anything you like.
If you done this right you should hear a ringing sound under neath your screen it should say "unlimited credits". You will have unlimited credits and all the cars in the gran turismo mode.
Super Car (modified)
Originally, Shannon put that if you just 'sup' up a Mitsubishi GTO Twin Turbo, you'll hit 248 MPH. If you know how, mess with the Gear ratio's for the car's racing transmission. You'll be able to hit over 250.
Super Car
Super car get a gto twin turbo (mitsubishi) sup it up all the way and it should be able to hit 248 mph.
1.000.000 $
Go backwards on high speed ring for three laps if you don't go off the track or hit any cars when you pass the finish line the third time you should here a car
horn then at the main menu, you will have 1000000 dollars and the concept car.
Breaking the Sound Barrier
This cheat lets you get up to very high speeds and "breaking the sound barrier". Here are the steps:
Get some speed
Then smash a wall at a 90 degree angle
Hug the wall for about half a lap
As soon as you do that get off the wall quickly and start driving on the road. Enjoy your speed!
Concept Car
In order to get the Dodge Concept Car, which you cant buy, you have to win the British vs US race.
Easy Money
The easiest way to get lots of money later in the game is to race the qualifier for the all nighter. You get $20,000 just for qualifing and it is very easy to do this with the GTO special edition or any other car with good speed/acceleration and handling. It takes app. 1'45" to complete with the GTO special edition.
Faster Acceleration
To accelerate faster, rev your engine during the countdown. Be sure to go from the lowest point in neutral to the hightest point in neutral, and back down to the lowest point in neutral as many times as you can before you go.
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