Yes, seriously everyone should watch this:
https://www.youtube.com/@AngeTheGreat
Other engine simulators work by approximating the engine.
Ange's engine simulator works by approximating physics of air fluid dynamics through a combustion chamber and exhaust, sound propagation, etc and then putting an engine into that simulation.
It's incredible how productive and precise he is.
Absolutely insane.
Also, I love that it was open sourced. Although it sounds like from the GitHub page summary that there was some shenanigans involving a "certain very high profile game studio" that I'd love to hear more tea about.