I'm having my ski set up for cc racing at sea level for stock class plus through hull exhaust and modified box (we can do that over here).
Revving on the high side at the moment and I will try a 14/19 and 15/20 impeller to get the revs down from 8.150/8.200 to about 8050/8100.
now I need the ski to pre set for 1,200m or (3,600feet) above sea level.
Does anybody know what to expect or what I should use?
Its for my race setup the holeshot is more important than the top end!!