Here is a detailed breakdown of how these tools function and what you need to know before using one.
If you edit too aggressively (adding 100 cars instantly), the game's UI fails to load thumbnails. The editor "worked" technically, but the game crashes. Fix: Add cars one tier at a time or use the "Delete All Cars" option first.
"Work" depends on what you want to do and which version of the game you own.
and changing it, you can instantly set your cash to any amount. WeMod / Trainers (PC)
But with great power comes great responsibility. If you edit your save and then crash into a new player in a multiplayer lobby while bragging about your "skills" in a car you didn't earn, you are missing the point of racing games.
Solution: You gave yourself "6 cylinders" of an engine that doesn't exist. The game's sanity check removed them. Stick to stock values (e.g., 1x Ultimate Turbo, not 99x).
The process for a Save Game Editor typically follows these steps: