Where would I go to find a good Evo IX racing tune on gt5 ?

[Absgeishahshs]

This is what I came up with but I'm still have a lot of under steer problems

Ride height
-25/-25
Spring rate
14.0/13.0
Dampers
3/4
6/7
Anti-roll bars
4/6

Camber angle
3.0/2.0
Toe angle
0.00/0.20
AYC Controller
30
Torque setting
50/50