Note: This game is also titled Shutokou Battle 01. 

Expert mode:
Hold Square at the track selection screen to give the CPU car a five star difficulty.

Boosted NA engines:
Hold Select at the track selection screen and keep it held until game play begins 
under your control Press Select to use a turbo boost. Note: This does not work 
with all cars. 

Unlocking cars and adding parts: 
To unlock more cars and add parts, defeat CPU cars. To unlock more cars ,you 
must defeat a new Boss ,Team Leader or Wanderer. Sometimes after you defeat 
some Bosses or Team Leaders, you will also unlock add parts. For a Team 
Member , you can only can unlock add parts. If you already unlocked all the 
highways, you may have already unlocked about 80% of the add parts on your 
list. If you have a Skyline or Supra, it can be tuned up to 600 hp or more.

Change engine:
When the odometer reaches 2000 km, you will be able to change the engine.

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

The Lord GT40:
Defeat the Boss "The Lord" and buy the custom car "The Lord GT40" and 
the "Level 9 Engine Tune". You now should get 700 hp and 70 kgm with this car. To 
defeat the bosses "D3 Supra" and "The Emperor Skyline", use this car. To buy this 
car, you need around 6,000,000. The "Level 9 Engine Tune" costs about 
280,000,000.