SEI lower units

[peteo]

I installed an SEI lower unit and went thru break in process as recomended. I was out running around and noticed an inability to get to my rpm of 5400 and my speed of 53 mph. I was only running about 4600 and around 43or 44 mph, if my memory serves me correctly. I believe the change is due to a different gear ratio in the new lower unit since nothing else has changed. Has anyone else had this happen? I have e-mailed SEI and they have not replied.
1999 Evinrude 175 FICHT, Mod# E175FPLEEC Ser# G04615125
Thanks, Pete

[alabamaangler80]

The gear ratios are all the same even if you look at the lightning lu. the only difference is the shape. Got to be an issue somewhere else.

[greenback]

just replaced mine with a sei broke it in and turning same rpms with it 225 jonny