I was happy with the results gained from removing the HICAS also, it does add to the turning circle a little, though.
BTW - on spring rates, does anyone know the specs for the King springs used in the GTR? I have King/Bilstein combo fitted and these are quite firm (almost too much).
Sydneykid - I also have pineapples fitted set up for traction (using the small/cut rings on the front). Do you use these in this configuation or as per all round performance (ie large rings on the front)?