I'm aware that this is an old thread, but I thought it was worth leaving another message, as I recently stumbled upon this mod in an old RF installation. And since I've found so many mods were radically transformed for me by
this thread, I felt I should revisit it.
I'm much more impressed than I was the first time I tried it. It's by no means perfect, but it's enjoyable to drive. It is indeed matching the revs on gear changes, however there's still a fierce snap at the back end with each gear change. It doesn't seem to be matching them close enough.
It's hard to find the limit of the car, as the tires have a lot of grip past the slip curve's peak. So where as the steering in a lot of cars would quickly become weak once you pass the peak, they don't in this Zonda until you pass it by a long way. Although this could be realistic behavior, I'm not sure.
I'm not going to post my version, as I'd hate to do so without permission, but I sincerely hope that you give this mod some more attention, Clockit. There's still a lot of untapped potential in this mod, and even in it's current state, I'd say it's enjoyable. Please upload it for the world to enjoy once more.