I moved the 9920 to my sons Emaxx running 3S Lipo and a Mamba Max 5700 motor. It's cutting out like crazy at full throttle. It never did this running my LST2 on 5S.
What the heck?
Mine:
2007 Grizzly 700 EPS EFI
Sons:
BL E-Maxx
4S MA 4000 Lipo/MM ESC
Feigao 9XL 22/54 gearing
Gmaxx single speed