I would assume if we had access to the cars and sampled the audio ourselves, we could get authentic noises. Using the mod however, I've been pleasantly surprised with most car's sounds 😁Not to say this mod isn't a good change because it is and I'm sure there was a big amount of work involved, but I feel like even with an infinite amount of tweaking GT6 cars won't come close to sound like Grid Autosport cars or more modern games. But maybe that can't be done due to how sounds work in GT6.