Hello,
There is something i never liked in the game: zipper appearance
Because it does not correspond a real physical object, i changed its particle some time ago but i think it still look too much to nitro so i had an idea:

I made a battery instead of current icon (maybe dark purple instead of black is better?) + new particle + new gfx file + other sound (The sound "wee" sound correspond to an electric sound that does already exists in the game, maybe i should try to find a new one)
I wanted the particle to be different from nitro smoke appearance, now this is a kind of electromagnetic field. The battery give you an electric boost

.

I initialy wanted to make the "electric field" particle appear in the middle of the kart but i did not succeed. You can test by downloading .zip file, don't hesitate to test, to like/dislike it, and try your own changes
If people want to keep it in the future, they will have to put nitro particle appareance for slipsteaming because it correspond to zipper particle.
Have a nice day
