boost and cooling are stats that can be

[round bison]

I see, If your going for an upgrade/roguelike system that might be neat, I think that its a negative thing to have the lower upgrade so low on boost time, I think you would benefit from increasing it a bit. I mean the first thing the player is going to see when going into their first race is this low form of boosting- and depending on how your upgrade system works which if its over time during the race- or over races you're still going to have the problem of this clunky boosting until that player gets a decent amount of upgrades

¯_(ツ)_/¯

idk just a thought