Professional mode

Select arcade mode, then highlight the "Hard" selection on the difficult selection screen. Hold L1 + R1 until it changes to "Professional".

Info submitted by Racer on Friday, July 13, 2001 at 09- To get -31- To get -01

Unlock Cars and Tracks

Complete these tasks to unlock the cars. 
Beginner League
Sunday Cup- To get - Toyota Sprinter Trueno GT-Apex (AE-86 Type I) 
Clubman Cup- To get - Mazda Eunos Roadster 
FF Challenge- To get - Toyota Vitz RS 1.5 
FR Challenge- To get - Nissan Silvia K's 1800cc 
MR Challenge- To get - Toyota MR-S S Edition 
4WD Challenge- To get - Suzuki Alto Works Suzuki Sports Limited 
Lightweight K Cup- To get - Mini Cooper 1.3i 
Stars and Stripes Grand Championship- To get - Chevrolet Camaro SS 
Spider/Roadster Cup- To get - Mazda Miata Roadster RS 
80's Sports Car Cup- To get - Mazda Savanna RX7 Infini III 
NA Race of NA Sports- To get - Honda CRX Del Sol SiR 
Turbo Race of Turbo Sports- To get - Daihatsu Mira TR XX Avanzato R 
Tourist Trophy Audi TT Race- To get - 4 cars, Audi TT 1.8T Quattro 
Legend of Silver Arrow Mercedes Benz- To get - Mercedes SLK 230 Kompressor 
Altezza Race- To get - 4 cars, Toyota Celica SS-II 
Vitz Race- To get - 4 cars, Toyota Vitz RS 1.5 
Type R Meeting- To get - 4 cars, Honda Civic SiR-II 
Evolution Meeting- To get - Mitsubishi Lancer Evolution IV GSR 
Beetle Cup- To get - 4 cars, Volkswagen New Beetle RSi 
Grand Turismo World Championship- To get - 4 cars, Toyota Celica GT-Four, Mitsubishi Lancer Evolution VI GSR, Mazda Miata, Nissan Skyline GTR V-spec II 
Get all Golds- To get - Mitsubishi Lancer Evolution V GSR 

Amateur League
Japanese Championship- To get - 4 cars, Mazda RX-7 Type RZ, Mitsubishi Evolution IV GSR, FTO GP Version R, Subaru Impreza WRX Sti Version VI Wagon 
American Championship- To get - 4 cars, Subaru Impreza Sedan WRX STi Version VI, Chevy Camaro Race Car, Audi TT 1.8T Quattro, Mazda RX7 Type RS 
European Championship- To get - 4 cars, Lotus Elise 190, Nissan GTR V-Spec, Gillet Vertigo Race Car, Mini Cooper 1.3i 
Gran Turismo World Championship- To get - 4 cars, Nissan C-West Razo Silvia, Nissan Z Concept car, Toyota GT1 Road Car, Mazda RX8 
Deutsche Tourenwagen Challenge- To get - 4 cars, Volkswagen Lupo Cup Car, Volkswagen Beetle Cup Racer, Astra Touring Car, RUF 3400S 
FF Challenge- To get - Celica TRD Sports M 
FR Challenge- To get - Toyota Sprinter Trueno GT-Apex Shigeno Version 
MR Challenge- To get - Honda NSX Type S Zero 
4WD Challenge- To get - Mitsubishi Lancer Evolution VII GSR 
Stars & Stripes Grand Championship- To get - Spoon Sports S2000 Race Car 
Boxer Spirit- To get - Subaru Legacy Blitzer B4 
80s Sports Car Cup- To get - Nismo Skyline GT-R S-tune 
NA Race of NA Sports- To get - Mazda RX8 
Turbo - Race of Turbo Sports- To get - Mines Lancer Evolution VI GSR 
Gran Turismo All-Stars- To get - 4 cars, Mine's GT-R-N1 V-spec, Raybrig NSX 
All Japanese GT Championship- To get - 4 cars, Honda Arta NSX JGTC, Denso Supra Race Car 
Tourist Trophy- To get - 4 cars, Audi S4 
Race of Red Emblem- To get - Nismo 400R 
Legend of Silver Arrow- To get - Mercedes Benz CLK Touring Car (D2 AMG Mercedes) 
Altezza Championship Race- To get - 4 cars, Tom's X540 Chaser, Toyota Vitz RS 1.5 
Type R Meeting- To get - 4 cars, Honda NSX Type-R 
Evolution Meeting- To get - Mitsubishi Lancer Evolution VI Rally Car 
Dream Car Championship- To get - 4 cars, Mitsubishi FTO LM Race Car, Mazda RX7 LM Race Car 
Get all Golds- To get - Team ORECA Dodge Viper GTSR 

Professional League
British GT Car Cup- To get - Aston Martin Vanquish 
MR Challenge- To get - Tommy Kaira ZZII 
4WD Challenge- To get - Mitsubishi Lancer Evolution VII Rally Car Prototype 
Spider & Roadster Championship- To get - Shelby Cobra 
Dream Car Championship- To get - 4 cars, Toyota GT1, Panoz Esperante GTR, FTO LM Race Car, F090/s 
Like the Wind- To get - Mazda 787B 

Rally
Tahiti Challenge of Rally- To get - Toyota Celica Rally Car 
Tahiti Maze- To get - Ford Escort Rally Car 
Smokey Mountain Rally- To get - Ford Focus Rally Car 
Swiss Alps- To get - Peugeot 206 Rally Car 
Tahiti Challenge of Rally II- To get - Toyota Corolla Rally Car 
Tahiti Maze II- To get - Impreza Rally Car 
Smokey Mountain II- To get - Mitsubishi Lancer Evolution VI Rally Car 
Swiss Alps II- To get - Mitsubishi Lancer Evolution VII Rally Car Prototype 
Super Special Route 5 Wet- To get - Citroen Xsara Rally Car 
Super Special Route 5 Wet II- To get - Subaru Impreza Rally Car Prototype 
Get all Golds- To get - Suzuki Escudo Pikes Peak Version 

Endurance
Super Speedway 150 Miles- To get - 4 cars, Chevrolet Corvette C5R, Tickford Falcon XR8 Race Car, F090/S 

Info submitted by Josh Bitler on Wednesday, July 11, 2001 at 15:44:44

All Star races.

Amateur league.

Gran Turismo All Stars-4cars-Mines skyline gtr n1 vspec,raybrig nsx, gt40 skyline gtr r-tune

Professional league.

Gran Turismo All Stars-4cars-Toyota Gt-one,Subaru Impreza WRX Sti version, R390 GT1 Race Car, Dodge Viper GTS-R concept.

Info submitted by Speedy on Wednesday, March 6, 2002 at 04:38:45

Rocket Car

Get all golds on beginner, amateur, and professional.

Info submitted by Joe on Wednesday, July 18, 2001 at 23:41:41

Trunk load of cash

You will see a similar code for Sega GT.
(You will need two memory cards to operate this function successfully. Save A car on both memory cards and transfer one car into the other.

Info submitted by 2002 comedy gamer on Wednesday, July 18, 2001 at 16:44:38

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

Info submitted by Shelby Lover on Sunday, January 14, 2001 at 15:03:39

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.

Info submitted by Joseph Medfisch on Saturday, July 21, 2001 at 15:48:51

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.

Info submitted by BrandonPullen on Thursday, July 19, 2001 at 21:10:14

Win cars

Endurance
Tokyo route 246: alaska- To get- 4 cars,    Gt one road car (TS020)

and to get polyphony001 (formula 1 car) win Endurance race- Super speedway 150 miles- 4 times

Info submitted by Robbiebedborough on Friday, August 17, 2001 at 05:52:53

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

Info submitted by jobi on Saturday, August 11, 2001 at 12:15:21

Formula 1 race cars and endurance race prizes

Special Stage Route 11:
   F687/S Formula 1 Racer
   C-West Nissan Silvia JGTC
   Arta NSX
   MR-S Autocacs Apex JGTC

Tokyo R246:
   F094/H Formula 1 Racer
   Mazda RX7 LM Race Car
   Nissan C-West Razo Silvia JGTC
   Toyota GT-One Road Car

Super Speedway 150 Miles:
   F090/S Formula 1 Racer
   Falcon XR8 Race Car
   Corvette C5R
   Clio Sport Race Car

300 Km Grand Valley 300 km:
   Spoon S2000 Race Car
   F090/S Formula 1 Racer
   Nissan 390 GT1 Road Car
   Impreza LM Edition

200 Miles of Laguna Seca:
   F686/M Formula 1 Racer
   F687/S Formula 1 Racer
   Nissan Skyline Calsonic JGTC
   Toyota Altezza LM Race Car

100 Miles of Seattle:
   Nismo GT-R LM Road Car
   Tommy Kaira ZZII
   Panoz Esperante GTR-1
   F687/S Formula 1 Racer

2 Hour Passage to Colosseo:
   F688/S Formula 1 Racer
   Vertigo Race Car
   Pagani Zonda LM Race Car
   Lancia Delta HF Integrale

Roadster Race at Apricot Hill:
   Eunos Roadster
   F688/S Formula 1 Racer
   Eunos Roadster 1.8 RS
   Eunos Roadster VR Limited A

Mistral 78 Laps:
   F686/M Formula 1 Racer
   Diablo GT
   Jaguar XJ220 Race Car
   FTO LM Race Car

2 Hour Trial Mountain:
   Mine's Skyline N1
   Lister Storm V12 Race Car
   F094/H Formula 1 Racer
   S2000 LM Race Car

F1 Championship:
   F687/S Formula 1 Racer
   F090/S Formula 1 Racer
   F688/S Formula 1 Racer
   F686/M Formula 1 Racer
 (NOTE:the formula 1 championship is the race following after like the wind, you know the one with a question mark)

Complete all Professional League Races:
   F686/M Formula 1 Racer

Complete all Endurance Races:
   F094/H Formula 1 Racer

Complete 100% of the game:
   F094/S Formula 1 Racer

Complete all races in GT Mode:
   F688/S Formula 1 Racer

Info submitted by mike-<b> domestics rule!!</b> on Friday, August 10, 2001 at 22:28:16

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.

Info submitted by Neil Gerard on Monday, August 20, 2001 at 00:13:13

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.

Info submitted by Kyle D on Sunday, August 19, 2001 at 00:14:14

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.

Info submitted by Turbo on Thursday, August 23, 2001 at 21:58:17

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

Info submitted by GT4eva on Monday, August 27, 2001 at 20:29:43

Speed overload

When pulling the wheelie code using the Escudo Pikes Peak version the car can go over 800 Mph as stated before, but I have reached a speed of " 1541.6 !! " Mph.(basically mach 2!).  In order to do this trick use the settings in the
1.Equip highest turbo.
2.Set spring rate to smallest for front and rear.
3.Set ride height to smallest for front and rear.
4.Set gear ratio's auto setting to highest possible level.
5.Set gear ratio's final gear to 3.000
6.Set front down force to lowest and rear down force to highest
7.Set ASM and TCS to level 0

as you might have already known.
Then when going to the test track go the reverse way around and stop just over half way through the first turn.  Floor it and try to make it out of the turn at at least 240 Mph.  If done correctly, by the end of the strait away congratulations, you have just doubled the speed of sound!!

Info submitted by rob sherlock on Tuesday, September 4, 2001 at 19:44:00

Win Cars

Cars to win: 

Suzuki Escudo Pikes Peak-all golds on rally

Evolution VI GSR- all golds in beginner

Oreca Viper-all gold in amateur

F686/M F1 Racer-all golds in professional

TIP. Panoz Esperante isn't worth buying.
The Escudo is.

Info submitted by Jimmy Joey Jo Jo on Sunday, September 9, 2001 at 00:26:59

Get the car you want in a series race

First you have to go to a series race and get all first place until the last race. When it says Race #9 or whatever the last race is  results save your game then go into the race and quit it. It will ask you "Quit Race?" go yes then go next. You will get your prize money and then you can get your car. If it's not the one you want then go back to the main menu and re-load your game. Keep doing this until you get the car you want.