Complete the game with 100% respect from all computer players.

Complete the all the series in Arcade Mode, except the Extreme Nitrous Series, to unlock the Bronze, Silver, and Gold Prototype Challenge Series.

When someone call you for a pink slip race accept it and then a map will show go to the race select car and press go then will show menu with your car and opponent car.Simply press B and comunicate will show "Leave event and finish last" accept it and you won't loose respect and your car.

Get a 100% completion in career mode to unlock the prototype mods for all cars in career mode and the Extreme Nitrous Series in Arcade Mode.

In career mode, go to your garage and do something with one of your cars (for example, switch a part or get a different paint job). The game should autosave. Then, go back to your race menu. Go in a sprint and bet all your money on one car that looks the fastest. It it does not win at least three races out of four, turn off the Xbox and turn it back on. It will load your last autosave. Try the same sprint again until you win then find a different sprint and start the entire process again.

In career mode, go to your garage and do something with one of your cars (for example, switch a part or get a different paint job). The game should autosave. Then, go back to your race menu. Go in a sprint and bet all your money on one car that looks the fastest. It it does not win at least three races out of four, turn off the Xbox and turn it back on. It will load your last autosave. Try the same sprint again until you win then find a different sprint and start the entire process again.

Earn 600 respect from any CPU character. Then, call any character on your mobile phone. Race for pink slips with one of your less powerful cars. After you get there, sell it for extra money. Make sure you have more than one car in case you lose the race.

On days off, host your own race. Choose a sprint and select Class 1 vehicles. You will get a Viper vs. Viper; Viper vs. Corvette Z06; or Corvette vs. Corvette, and only two drivers, Biggi and T.K. If you get the Viper vs. Corvette, put all of your money on the Viper (maximum bet of $500,000). Collect your money, and repeat. You can choose other classes, but the lower classes give you mixed car results. Generally, anything modern will beat any muscle car in a sprint. A Skyline will beat a Corvette with up to 25 more horsepower. Biggi is a better driver than T.K. Sue is a better driver than Biggi. T.K. cheats every chance that he gets. You can also use your track to get better parts. Just schedule a circuit in the class of the car you want parts for, let your crew do the driving, and use all the cash from betting on sprints to hook up your ride.

Host your own race, then pick sprint. Use your own speedway as the track. Select "Watch Race" so that you can bet. T.K. and Biggi will always race against each other. Bet on the car with the higher horsepower. You will win about 98% of the time.

Get three of the CRX mod it until you have 199 hp. Let Amber, Vito, and Chief race the free sprints until they get full skills. Then , use them in a 2-2-2 or a 3-3 circuit race.

Start with a Viper GTS fully tuned and go to the oval track. Drive about 210 mph. When you are about to turn, turn the other way into the wall. Hit the nitrous and hold it while still turning into the wall. If done correctly, you should go up and fly. You must be in the dirt part of the turn. Try using the nitrous two seconds before hitting the wall and hit the wall (wire fence) at about a 30 degree angle.

When You First Buy A Car (after TK's Race) Put The Available Performance upgrades Into The Car. Go Onto Calender And Host A Race. Put 12 Laps On Course (Route 1) And Enter The Race In Your Car. A Menu Will Come Up With You, Biggi And TK's Cars. Make Sure Your Car Has The Biggest BHP (Break Horse Power) If Not The Restart Your Xbox (Your Race Meeting Will Still Be On The Calendar Enter It Again (Keep Doing Process Until You Have The Biggest BHP. When You Have You Can Have A Bet (Optional)And Then Start Race. Keep Racing And Gaining Ground Trying To Lap Them You Will Get A Green Sign On Your Screen Saying Improving Lead. Try To Get 3 To 4 Of Them Improving Lead Signs A Lap At The End Your Respect Will Be From As Little As 1000 To A Maximum Of Well Over 2500.

On code section enter "FAST" to get unlimited money in arcade mode.
On code section insert PINT to activate the code