will do tonight.
i know a few off the top of my head. the lsd is stock, downforce is set to max, gear ratios are stock, but the one that shortens or lengthens them is set to about 9, suspension is the stock racing suspension setup, no brake controller, traction contol set to 1, understeer set to 7, oversteer set to 3. this makes you go into the corner sideways, then you just gently get on the gas and drive out of the corner well.
also think about how your line out of that corner affects the next corner. this is only really important for corners 2-3 and 3-4.
that 51 second lap was a freak lap. i don't think i could do it again. i could do the low 52's again, but not the 51.
i also found switching off the ghost helps a little, simply for the fact that if you get a slightly worse run out of one corner it blocks your vision of the braking spots.