I have forgot the exact setting right now, just remember i use the max turbo level and timing, and the turbo delay is 0.1 and it will start at 6000rpm.
Today tried some set up tips from "high hand" and found that using the lower traction tire at front which can really help the car stability and my car now much less "nut" now!
I also have same feel at the beginning when i heard that idea, but after try this, it really run much better. I just bought some cheap price tire like (Swxxp or Solaxxx).
推頭 = Understeer (Grip at Rear > Grip at Front)
甩尾 = Oversteer (Grip at Front > Grip at Rear)
They are opposite to each other. So, increase/decrease one factor must decrease/increase the opposite factor.
Reference from: Hudy/Xray Set-up manual.