That is kind of funny, since I didn't really say, "with all due respect". I don't really see that any respect is due. Fatrabbit has offered a tune for the car. You have not. In that absence, he gets my respect for trying.
Contrary to your opinion, though, this thread isn't about you. If you aren't going to offer any suggestions for making it better, then please see your ego out.
As to the tune, I did try it last night, Fatrabbit. I tried it on one of the Mt Aso tracks and I tried what I call a
Swing Blend on Autumn Ring Mini. The Swing doesn't have an LSD and uses the default settings on the Height Adjustable Suspension.
Clearly, I have no idea how to make a tune better. It could almost have a randomize button on it. But I can't say as your tune was dramatically better. I didn't try them on the same course, though, so I can't compare lap times.
The LSD would keep the back-end in check at times. But it did it at a dramatic cost to peppiness, so I didn't feel any faster than I did just feathering the throttle.
Some of the Swing's peppiness over yours may have also come from the horsepower. The Swing ends up with ten more BHP than yours, so I had to use a little more engine limiting. There is a sweet spot in engine limiting when you've flattened out just enough of the curve to give you a very broad power band without smothering the engine.
p.s. I took them both around GVE-R this morning for three laps. I was able to get yours to 1:16.241 and the Swing to 1:16.360. Since I'm not very consistent or good, I'd count that as margin of error. But, I will say, yours was quicker through the first sector, and that is worthy of note. In that section, I'm staying in high gears, but I'm not going flat out. It is slower through the rest of the course when I can go flat out, and feather the throttle slightly to avoid oversteer.