OK gave it a go. I'd like to be more constructive, but short of actually fixing it myself (impossible for numerous reasons
), all I or any of us can do is criticise things we think sound wrong
Diff/transmission whine: Hurrah it's there, thought it might be a possibility on the UF1000 but I certainly wasn't expecting it in the TBO cars, much less the FR cars. Doesn't seem to be a reason for it. Straight cut gears? Mini-esque engine-transmission layout/angle? Doubt it.
In the LX4, 9krpm sounds like 7krpm. The engines hardly seemed to be screamers anyway, but now they sound more choked than ever. This applies to all the other cars in fact, to varying degrees. Muffled, restricted, gutless, muted. Tickover is like an electric car.
There's also still, perhaps even less, of a metallic element to the sounds. Nothing sounds tinny, not on even the puniest motor with the peashooter exhausts. There's no rasp, no zing, no easy way to describe it
UFR and XFR just sound bizarre at low speed. Almost like pod-surfers. A combination of the overly smooth and muffled engine with the not-quite-right transmission whine.
They seem to sound a bit better from outside than inside the cars, but generally I prefer the previous sounds. They sounded more alive, more soulfull. U32 sounds are as if you're listening to a muffled bad recording of car sounds and the levels are all wrong. Which is a good thing, because less elements are missing than before, but it's actually further from being "right" than before.
Oh and BF1 sounds like a duck-call when you go through the gears, quack quackquack-quaack-quaack-quaaack
Disclaimer: The above = IMO. Not a statement of fact