Actually I am not interested that much in the physics side of the game, but if the author of the original mod wants to do a version with this engine I am totally up for it!
Unevenness between On and Off throttle? Are you talking about internal or external sounds? Just want to know so I can fix it, can you be more specific please?
Amazing work! And if you need extra help, for the sound, check out Alberto Naska youtube channel with Legend Cars onboard sound! (maybe you already know it) https://www.youtube.com/watch?v=o_RG4wYSPJM
Thanks! By the way I already know Naska's YT channel, that's also another reason why I wanted to make this new sound, but i found another source for samples which has cleaner sound, both for internal and external, but for external I used Mclaren MP4/4 sources too. Here they are: https://youtu.be/pzu7teS7f3o https://youtu.be/0W7lufh_7IQ