martin
i cant go any smaller lol
with my old blue speedo i ran 83/26
with the gm ive run 83/23, 83/19 and 83/17 (smallest cat sx will take) with no improvement in temp oonly using factory mode 6 reduced temp, and i know this runs less advance than mode 3.
on 83/17 the motor was at full throttle nearly half the lap an was at full revs at around a 1/4 way down the stright, then the timing came in.
im wondering wether the extra weight and load on motor in offroad vice tc means profiles need to be very different.
we would normally gear as sp/gm 6.5 outdoor @ 83/21
Ill email you my gda later to see what you think
Thanks
Richard