Ok, so I've always wanted to make this LP a bit more interactive. So I take it to you goons to help Hiro modify his car so we can win some 0-400 races.
To help this, I've run the translator on each of the options, to both get the amusing descriptions, and give us an idea of capability. We have 300,000 yen to work with, so let's work wisely.

Parts
- 20,000 - Muffler - breathing is better.
- 70,000 - Tyres - Wheel spin is reduced.
- 30,000 - Rear spoiler - presses the tyres with the power of air.
- 40,000 - Front spoiler - reduces air pollution.
- 10,000 - Side spoilers - Maintains safety. (??)
- 80,000 - This is an octopus leg. Attached between the engine and the muffler, it is a way to eliminate the feeling of regret.
- - I think these are actually extractors. But let's pretend they're actually octopus legs.
- 100,000 - This is LSD. It's set to low gear. Your speed will improve.
- 70,000 - Turbo - The force of exaled gas is used to push the gas into the cylinder. I'll be powering up today!
- 790,000 - Engine? - The engines power is used to push in the gas. The power will increase significantly.
- 700,000 - Intercooler - This is a much have part for high speed engines such as turbos and superchargers/
Tune up
- 60,000 - CPU Tune: 'Remove the rev limiter'
- fun fact, all japanese cars are limited to 180kph. Not sure if our March can even reach that though.
- 10,000 - Port Kenma: 'Reduce and smooth the amount of road leading to the final stretch'
- - not exactly sure what this is trying to say. Polish the header ports?
- 60,000 - Ashukuhi up: Ashugu, i'll give you my all today. Power explosion gives you strength. This is a power-up.
- - Increase horsepower? Maybe this is temporary on a per race / day?
- 220,000 - Bore up: Make the cylinder bigger. Increase Engine Power Output.
- - Now we're talking.
- 70,000 - Financial Aid: Make your body lighter.
- - I think this is a staged weight reduction.