i really want to make a speedrun but i just have a usb loader

You should probably ask in the forums of the game, the answer might be different for different games. https://www.speedrun.com/mkw/forum

thanks

Mario Kart Wii bans USB Loaders according to the game rules, so no, you can’t submit an MKW run done with a USB Loader.

And if you’re asking if you can request a new game while using a USB Loader, I guess that’s a weird a question. While there is probably no explicit rule that says a game request can’t feature a run using a USB Loader, it would discourage you from doing it. USB Loader for Wii is extremely inaccurate and using it for runs isn’t not going to create an even playing field. So, I personally wouldn’t do it just to avoid issues down the line if any other runners picked up the game you submit.

ok