Gran Turismo 3 Cheat Codes for Playstation 2

Unlock Professional mode:
Select arcade mode, then highlight the "Hard" difficulty selection . Hold L1 + R1 until it changes to "Professional".

Obtaining F1 Racecars
Get unlimited F1 racecars by entering/winning endurance races, as you can win prize cars from these endurance races an unlimited amount of times. Select a prize car by pressing X when the black circle is under the car you want.

Cars you receive when you win competitions
Aston Martin Vanquish:
British GT Car Cup in the Professional League.

Audi S4:
Tourist Trophy in the Amateur League.

Audi TT 1.8T Quattro:
Tourist Trophy Audi TT Race in the Beginner League.

Celica TRD Sports M:
FF Challenge in the Amateur League.

Chevrolet Camaro SS:
Stars and Stripes Grand Championship in the Beginner League.

Citroen Xsara Rally Car:
Super Special Route 5 Wet in Rally.

Corvette C5R:
Complete 50% of the game.

Ford Escort Rally Car:
Tahiti Maze in Rally.

Ford Focus Rally Car:
Smokey Mountain Rally in Rally.

Honda CRX Del Sol SiR:
NA Race of NA Sports in the Beginner League.

Honda NSX Type S Zero:
MR Challenge in the Amateur League.

Honda NSX Type-R:
Type R Meeting in the Amateur League.

Impreza Rally Car:
Tahiti Maze II in Rally.

Mazda RX8:
NA Race of NA Sports in the Amateur League.

Mazda Savanna RX7 Infini III:
80's Sports Car Cup in the Beginner League.

Mercedes Benz CLK Touring Car (D2 AMG Mercedes):
Legend of Silver Arrow in the Amateur League.

Mercedes SLK 230 Kompressor:
Legend of Silver Arrow Mercedes Benz in the Beginner League.

Mines Lancer Evolution VI GSR:
Turbo - Race of Turbo Sports in the Amateur League.

Mini Cooper 1.3i:
Lightweight K Cup in the Beginner League.

Mitsubishi Lancer Evolution IV GSR:
Evolution Meeting in the Beginner League.

Mitsubishi Lancer Evolution V GSR:
Win all Golds in the Beginner League.

Mitsubishi Lancer Evolution VI Rally Car:
Evolution Meeting in the Amateur League.

Mitsubishi Lancer Evolution VI Rally Car:
Smokey Mountain II in Rally.

Mitsubishi Lancer Evolution VII GSR:
4WD Challenge in the Amateur League.

Mitsubishi Lancer Evolution VII Rally Car Prototype:
4WD Challenge in the Professional League.

Mitsubishi Lancer Evolution VII Rally Car Prototype:
Swiss Alps II in Rally.

Nismo 400R:
Nissan Silvia K's 1800cc:
FR Challenge in the Beginner League.

Peugeot 206 Rally Car:
Swiss Alps in Rally.

Shelby Cobra:
Spider & Roadster Championship in the Professional League.

Spoon Sports Civic Type-R:
Win FF in the Professional league.

Spoon Sports S2000 Race Car:
Stars & Stripes Grand Championship in the Amateur League.

Subaru Impreza Rally Car Prototype:
Super Special Route 5 Wet II in Rally.

Subaru Legacy Blitzer B4:
Boxer Spirit in the Amateur League.

Suzuki Alto Works Suzuki Sports Limited:
4WD Challenge in the Beginner League.

Suzuki Escudo Pikes Peak Version:
Win all Golds in Rally.

Team ORECA Dodge Viper GTSR:
Win all Golds in the Amateur League.

Tommy Kaira ZZII:
MR Challenge in the Professional League.

Toyota Celica Rally Car:
Tahiti Challenge of Rally in Rally.

Toyota Celica SS-II:
Altezza Race in the Beginner League.

Toyota Corolla Rally Car:
Tahiti Challenge of Rally II in Rally

Toyota Sprinter Trueno GT-Apex (AE-86 Type I) :
Sunday Cup in the Beginner League.

Toyota Sprinter Trueno GT-Apex Shigeno Version:
FR Challenge in the Amateur League.

Toyota Vitz RS 1.5:
FF Challenge in the Beginner League.

Toyota Vitz RS 1.5:
Vitz Race in the Beginner League.

Volkswagen New Beetle RSi:
Beetle Cup in the Beginner League.

Rocket Car
Get all golds on beginner, amateur, and professional.

Is your Shelby GT350 not going that fast?
If so go to a race with "FREE" as an HP setting.Then go to SETTINGS and click L1 or Part Settings. Go to Brakes and change it to 1 Level 15 Level. Then go to Gears go down to the bottom and change the last number to 25. Finally go to others and change the numbers to these: LSD Inital 1 LSD Acceleration 36 LSD Deceleration 16 ASCC 74 TSCC 2

Beat races the easy way!
Earn up some credits to by a car thats $50,000 or more then buy a turbo kit 4 or N/A tune up 3 and install that. Now make sure your transmission is geared right so it can use all that power. After all that, go to the endurance races and race on the super speed way course (150 mile challenge). Race on that course until you get the formula 1. The F1 is the best car(s) in the game. The 150 mile challenge will take 1 hour to beat but the competition is weak, you can beat the race easily if you have the time. Just make sure you have the proper license.

Wanna Pull A Wheelie?
This works and don't overlook it. If you want to have fun with a car with over 950hp and racing modifications. You can gain speeds in excess of 800mph. Examples of cars used are the Escudo Pikes Peak, Camaro Race Car, and GT-One Race Car. Here are the steps. 1.Equip the highest possible turbo or NA tune stage possible. 2.Decrease spring rate to smallest possible value on both front and rear. 3.Decrease ride height to smallest possible value on both front and rear. 4.Set gear ratio's auto setting to highest possible level. 5.Set gear ratio's final gear to about 3.000 6.Decrease front downforce to the lowest and increase rear downforce to the highest possible value. 7.Set ASM and TCS to level 0 Now go out on the test coure and when u reach about 230mph your car will begin to catch some air.

1835 hp
To get a car with About 1,835 horse power, get the Suzuki rally car and put a turbo stage 4 on it. With the correct gear ratio it should go around 280 mph

Easy way to get F094/s ( best Formula 1)
If you're just starting, buy a good car and raise enough money for a TVR speed 6. Win the Tuscan Challenge(professional) and save the game if you get the Speed 12. Then, win the Polyphony cup(professional) with the stock Speed 12. One of the four prizes is the F094/s, the best overall car in the game.

Quick and easy HP
Once you bye or win a car befroe you race or do any modifications go to GT auto and perform a oil change and a car was. This will add any where from 5 to 40+ HP.Quick and easy

Quick Money
Go buy a Skyline R34 VSPEC II and buy stage 4 turbo kit, tires, lighten the car as much as possible, and a better suspension and go race the GT Emblem in amateur and with the right skills you should be able to control the Skyline very well. Race at Leguna Seca, its only 3 laps so tires dont wear out and the 1st place prize is $30,000 and don't worry about losing, your opponents drive stock Skylines.

Easy Money Fast
When starting out, buy a car which goes at least 145mph, added a turbo kit 2 or greater. Go to beginner league and enter the gt champion ship (10 races) Go to the super speed way and keep winning until you've reached about 200,000cr, Then go to car dealers and to lotus, and buy the best car for 113,000. Then equip it with turbo and go to the 150 mile track, beat it twice, You should get the corvette on the second time, Add a N/A Tune up 3 to it, it should be over 1000hp and go about 240mph Now go to the 150 mile track, and win 2 more times, it won't take long cause it will only take 40 minutes to beat the course. Get the F1 Formula car, and and win the 150 mile race over and over, with the F090 it won't take more then 30 minutes to beat. Keep winning, and selling the double cars. This cheat works

Zoom:
At the car select screen you can hold the R1 button to zoom in on the available car. If you hold R1 + R2 you will zoom in even further (this will demonstrate the amazing ability of the PS2 to "push" graphics).

Free upgrades:
This is not a cheat but a way to make the game a little bit easier. If you and a friend are both playing GT3 then split the cars you buy, one buys a FF car and one buys a FR car, then upgrade them to the max and go to the trade section in your garage area. The cars trade for the purchase price but you get all of the upgrades done to the car for free.

Free upgrades:
You can also sell the cars that you have to yourself by clicking the trade button and it is just the purchase price

Pro difficulty level:
In the select difficulty level screen, point the cursor on 'Difficulty' and push L1 + R1. Do so, and you get the Pro difficulty level.

Make the more difficult non limited races a breeze:
Save money and as soon as you are able to purchase a powerful turbo car like the SKYLINE do so. Then buy upgrades as you can. Once fully upgraded race the Superspeedway endurance race as many times as it takes for you to win the Formula One race car. It's acceleration and handling are bested only by a couple other F1 cars which you can now win with ease.

Easy Money:
This isn't a cheat so much as an effective strategy for beginners. First get a car to the 300 hp range, then race the Super Speedway track in the Beginner class GT World tournament. If you race against only Rally cars, you should be able to win, for $10,000 a win. Do this about 10 or 15 times, until you have enough to get a good car and tune it into the 500 hp (or higher) range. From there, enter the European Championship series in the Amatuer class. Win the first four races, then save your game. Enter the fifth race and immediately exit. You'll win the series and win one of four bonus cars. If you get a car other than the Vertigo race car, exit out and load your game to quit the fifth race again. Do this until you get the Vertigo race car, which you can sell for $300,000. You also should win about $50,000 from the four races and the series win. This should take about 20-25 minutes, and yield around $350,000.