First of all, sorry for your loss.
Now, the tool is simply insane. The engine behaves as you'd expect ingame. It's honestly shocking how well it actually works.
It's so much fun creating engines and throwing them into your favorite cars. We've begun having contests, everyone building their own engines with HP limits, making our own gearing, throwing those into identical cars and then racing our cars against each other online.
It's really a lot of fun and opened up car modding for me, something I wasn't really into before this tool. (I'm a track creator)
I've seen some people have issues with the folder path being set for a different user - try looking through this discussion to see if it helps at all:
https://github.com/zephyrj/engine-crane/issues/27
Otherwise this may help:
https://www.youtube.com/shorts/Vv5uF1lCv6w
If you're still having issue try raising an issue on GitHub and I can look into it in more detail:
https://github.com/zephyrj/engine-crane/issues