Missing sound effects?

So I been playing Forza since december, no complaints really. I didn’t even realized it but lately I haven’t been hearing any blow off valve noises, nor supercharger noises. Is it only me?, does this happen to anyone else?

In the early stages of the game it would come in and come out on it’s own. But it’s a little annoying now and I thought those little bugs would’ve definitely been fixed by now. It’s like every car is naturally aspirated even though the full turbo/superchargers are installed. :confused: