Free Nitro Refill
After having installed the middle, or largest NOS, install 1 level lower NOS,
install the original NOS back and exit. Your cost should be $0.

Get away from police
To get away from any cop during a pursuit, drive into the showroom parking lot.
Park in the corner where the wall is located. The cops will circle but not find
you. Wait until your meter reaches "Evaded" and you will be all clear.

Drifting the Sprinter Trueno
Learning to control this car will rack up massive respect points. Before
entering a corner, tap your brakes and release the gas. Point your wheels in the
direction of the corner and angle your car for the exit. Ease on the gas to
bring yourself through the corner. You can easily achieve Kensei Drifts, Braking
Drifts, Jump Drifts, Feints, and Two Wheels using this method and car
combination.

Get more then one video of a girlfriend
Ante up and win a few new events to unlock more videos of your selected
girlfriend.

Wagering
When you place wagers before each race, the amount of each wager stays the same
throughout all three races, no matter what the wager amount says between the
races. For example, if the beginning wager is $2,000 then it will remain that
way throughout the entire series for that racer.

Easy money
Go to the desert sanctioned race and do level one. Select the last wager on the
screen, then accept it, and race. Do this for every race and you will get at
least $12,000 easily. Keep repeating this to build up a large amount of money.

Go to the street challenge (Boulevard Sprint). If you race there, you will have
a 90% chance of winning.

Get a car that at least has 330 hp (after all the upgrades), then buy the Venom
2000 nitrous kit. Enter the Boulevard Sprint in the street challenge menu. Keep
entering this race repeatedly, but make sure you always have at least a half
tank of nitrous when you start.

Body kits
Although in real life, body kits were originally designed for aero-dynamics (to
reduce wind resistance, thus making your car move faster), this is not true in
the game. The body kits weigh down the car more, thus reducing your top speed.
This can be as little as 10 mph to as much as a 25 mph loss, which can obviously
be the difference between walking away with someone's ride or losing yours. Do
not put body kits on your cars. They do not add to respect, will slow you down,
and makes your car cost more to repair.

Spoilers
When you buy a new spoiler, check your hp. All add-on spoilers loose some hp,
but some lose less than others. Your stock is usually the best.

Unlock Cars
Subaru STi - Win the Street Revolution Crew Meet in street mode
Mazda RX-7 Bathurst - Have all first place finishes in the Los Angeles Iron Man
challenge in arcade mode
Mazda RX-8 Mazdaspeed - Have all first place finishes in the Miami Iron Man
challenge in arcade mode
Mitsubishi Evo VII GSR - Win the Los Angeles checkpoint mission in arcade mode
Nissan Skyline V-Spec II Nur - Win all three Nitro Xtreme Crew Meet series in
street mode
Toyota Trueno Apex - Finish first place in in the Philadelphia Iron Man
challenge in arcade mode