To be entirely honest, this tune didn't really blow my socks off, but I attribute that mainly to the car being so awesome even in stock form.
Your tune was debatably a bit more stable, but also a bit slower than in stock configuration with the power turned down to get 600PP (at 73.7%), the brakes at 7/6, and all of the differential settings turned down to 5s (which is how I had used it a few times). My lap times were very close, there wasn't a huge difference, but there was some.
Granted this was on pavement, on dirt it might be a different story. Regardless, if you're looking for perhaps a bit more stability (at the loss of a very little quickness), this may be the tune to try.
It's just such an awesome car I'm not sure it's possible to make it drastically better.
