Just upgraded my '18 250 ProXS 2S to a '20 ProXS 4S, i.e. serial number 2B739267. Don't even have two hours on it yet. First time out, couldn't get past 5200 rpms. Took it back to the dealer who put it on the computer, adjusted the hotfoot and said it is getting 100% WOT. Put it back on the water and can now get 5800 rpms at WOT, but speed is 6 mph slower than my old 2S. Running a 23P Fury, have an Atlas JP that I have tried at different heights but found the sweet spot to be at level 8. I am doing half trim. I suspect I am still not getting 100% WOT but also wondering if I am doing something wrong. Does anyone else have a Ranger 520L with this motor, and if so, what rpms and speeds are you seeing.
Second issue, on the MercMonitor Level 0, when I trim the motor the trim gauge pops up, but it will never get past 25%. It will go to zero, but not past 25% even at full tilt. My water pressure gauge was not working but that was fixed.
Any advice would be appreciated.