About what one would expect from 60 cc x 20" w/chisel.
Power range feels narrow but the carb needs tuning and the muffler opened up.
How close is the afm cyl porting to the oem cyl? I loved how the oem ran muffler modded and hated the one I ran with no muffler mod.
Your muffler opened up? Never mind see you said opened up.