Hi i know that feeling but,getting from 49 to 48 or 47 territory is mostly driving style , yes the setup can get you going, and maybe improve ur lap times a little , but u cant just stop there. The Nissan is capable of insanely short braking zone ; so start from there, reduced ur braking zone by 2mt then 5mt and ull' see that this car doesnt lose control in hard braking zone such like before t1 or t3 or t6 .