I have a 2010 sbare ftd with a 150 optimax and just swapped from a 25p tempest running around 63 at 5400 rpm and now have just put on a 23p power tech had to play what the jack plate and now Im turning 5600 rpm and running 64 water has been to rough to really run it but got a much better hole shot and I can tell Im going to be running faster