I purchased 25 Fury 4 and installed on my 2012 stratos 294 EVO. Its a 200 pro xs. When started it, was 3.5and all I can get is 5250 RPM @ 65 mph gps, granted it is summer and i'M AT 770 Elevation. My 25 Tempest with cup added was losing some as well. I was doing around same speed with set up, but RPM's were 5450. This tempest will turn 5700 in winter and hit 70.5 on good days. It may be a motor issue but when I went to 3" below pad my holeshot was the same but lost top end and RPM's. No poles but I'm running 3 31 series batteries, lots of tackle + 80 lb Ultrex.
My tach reading's is digital and my water pressure was 18 psi @ WOT. Hole shot is super and love how it handles. almost forgot its on a 6" slidemaster. Yesterday in a small tourney, I was doing 65 with a heavy guy riding and a 1/2 tank of fuel.