I have a new e-tec 225 on a 89 25SC 11 degree deadrise
I average 2.5 mpg at 28 mph and 4700RPM
Top speed is 38mph at 5600 RPM
4 blade prop
total weight is approx. 6000lbs
What are other owners getting
I though I read someone was getting over 3MPG with a 25SC
I just installed this chirp 12 degree, I have a modified hull
Close to keel it has clean water and works fine at all speeds
it is connected to a simrad nss9 evo2
with a deep V you should use the 20 degree