Note: This game is also known as Shutokou Battle 01.
 

Expert mode
Simply hold Square when your at the track selection screen to give the CPU car a five star difficulty.

Boosted NA engines
Simply hold Select when your at the track selection screen and keep it held until the game play's under your control. Now press Select to use a turbo boost. Note: This will not work with every car.

Hints & Tips

Accessing cars and adding parts
To access more cars and add parts, beat the CPU cars. To access more cars, you need to beat a new Boss ,Team Leader or Wanderer. Occasionally after you beat a few Bosses or Team Leaders, you will also access add parts. For a Team Member , you can only can access add parts. If you already all the highways, you may have about 80% of the add parts available on your list. If you have a Skyline or Supra, it can be tuned up to 600 hp or higher.

The Lord GT40
Beat the Boss "The Lord" and buy the custom car "The Lord GT40" and the "Level 9 Engine Tune". You now should achive 700 hp and 70 kgm with this car. To beat the bosses "D3 Supra" and "The Emperor Skyline", use this car. To purchase this car, you need roughly 6,000,000. The "Level 9 Engine Tune" costs roughly 280,000,000.

Change engine
When the odometer get's to 2000 km, you will be able to change the engine.

Easy Boss challenge
Simply challenge a Boss at the corner area or prior to the corner. That is the one weak point for a Boss. For the Boss "The Lord", start the challenge at the highway that only fits one car. After that, it will lose control and crash.