You've got to start with reverse engineering the source code, I'm not super sure if there's any effort already being made for MKA. Maybe a better/easier option would be working on a rom hack for Mario Kart 7 to port over the exclusive stuff from...
@SylverReZ I've never used a disposable, seems like a waste. kinda cool idea tho. It would be nice to have vape built in to a cell phone even. "The iVape"
only ps5 updated to latest firmware can go on psn, jailbroken ones just don't use psn or they risk getting flagged or banned, altho spouting profanity in online play alredy does that