You press the button, the exhaust explodes, and you drive a little faster.
A little preview of what it looks like in the orbital camera
this was originally done after I found out that you can access the postfix effects through the world editor (which means you can also just through the lua code).

This mod should be compatible with any mod if the specified mod has a properly configured exhaust (see if there are exhaust particles in it) and corresponds to the name of the vanilla wheel (FR, FL, RR, RL, RR1, RL1, ...).
At the same time, I do not give any guarantees that it will work on all cars.
- Fixed a bug that caused the mod to crash the system (at least for me) due to the lua exception.