You will probably find about 300 rpm increased load with the MenzS-
On a 40-in my Sig Sukhoi- this had the fastest acceleration from low or hover stuff.
and horizontal speed esily went too fast .
It is also quieter.
I think I ran this at just under 7000 -if I changed exhaust setups - I could change static speed quite a bit . I had a tunnel for the exhaust on this , so I could -at the field, simply switch systems in a couple of minutes.
The worst exhaust system dropped the prop rpm to under 6500-static-but was whisper quiet.
The plane still worked very well but got soft on long humpty bumps.
Easy to tell power loss- the rudder needed to be added as power fell-during this type maneuver.
I didn't fiddle much with hovers-and no flippity plops.
The Sukhoi did tumble very well tho
I sure wish this model was available without that color scheme- man --that was hard to orient in bad skies.
I sold it -but it was a very solid flier.