WOW since 2010 jejeje.
just wanted to give my input in case this problem hasn't been resolved.
OK so, after reading every page on this thread Id like to make my input. Ive been to the same track over 30 times and driven more than 5 different cars. there are 2 layouts, 1) the whole track and 2) a smaller layout with tighter turns that would somewhat replicate auto X.
I went to to the track with my stock Z and experienced ice mode in the smaller layout, it was ridiculous. Didn't have any problems in layout 1.
Made some changes to the brakes, SS lines, motul 600 fluid, EBC yellow stuff pads, cooking ducts and in layout 1, the brakes are MONEY with the stock suspension. HOWEVER when I had the tein lowering springs, Ice mode came in pretty much every corner on layout number 1 (tein springs are progressive and way too soft for the track). So looking that some guys have higher spring rates in the front (18k) and Ice mode went away, I assume that the problem is in the rear like some of you have said.
Another member posted that he went with some carbotech 10 front and 8 rear and ice mode went away.
I went to the track last wee and went around layout number 1 and didn't experience ice mode (stock suspension), however yestersay, with the EXACT same set up I experienced ice mode in making stops from about 60 to 20 and 50 to 20. not just once but like 3 or 4 times.
Would it help if I go with some less aggressive pads on the rear?
I will leave my Z stock since I have another car that's for tracking only with no ABS