Flag to Flag Cheat Codes:

-Rainy weather
At the transmission selection screen in arcade mode, hold L + R + Down. Continue to hold the buttons until the track completes loading.

-Weather never changes
At the transmission selection screen in arcade mode, hold L + R + Up. Continue to hold the buttons until the track completes loading.

-Bonus pace cars
Complete championship mode four times to unlock the Acura NSX, BMW M3, Toyota Celica, and Toyota T100 pace cars.

-Drive as S. Hattori
Complete championship mode once to unlock a bonus Japanese driver that is not ranked in the CART-Season or with a Team.

-Super Speed mode
Complete championship mode once. Super Speed mode will remove mirrors in the cockpit view and twenty cars to increase the frame rate to 60 fps.

-Bonus camera angle
Complete championship mode once to unlock a far top view camera angle that resembles the game Micro Machines.