not my tune but b-spec bob is currently beating up JGTC cars in the 1000km at Suzuka 85 laps in and he has the entire field lapped twice.
Ride Height = -21/-16
Spring rate = 7.8/5.0
Dampers (Ext) = 7/7
Dampers (Comp) = 4/4
Anti-Roll = 3/3
Camber = 3.7/1.7
Toe = -0.16/0.26
Brake Controller = 10/3
Downforce = 20
Transmission/Top speed = 180 MPH.
What kind of tires are you running? Race Hard?