my diff is 5 27 5 but i have only gone 1 stiffer on everything and running more camber on the front, less on the rear. i have a mk5 but i spent all last night trying to get a good white lap in the ST i ran out of time (up till 2 am racing online lol) I will have another crack at it on saturday (wife is out then) also learn the track is making up so much time, i think that is where i am losing too much time still
getting there slowly....think i can get 5 seconds off that max...maybe limited because i am still on a controler!