So my favorite old A45 flung an ear recently so I ended up getting a new A47 (didn't want to hunt down a used A45 for number of reasons) and here's what's happening:

A45 - 71.3 @ 6000
A47 - 70.6 @ 5600 <- won't go higher and she seems a bit more chiney but that could just be me not trimming her right trying to get the RPM's up etc.

Losing a smidge of top end w/ the A47 doesn't bug me but why (how) am I losing 400 rpm and STILL getting dang close to the A45 speed ? Doesn't seem condition based i.e. boat / gas load, weather etc


2020 225 SHO
2011 Ranger z519C