sacaja

anyone out there familiar with these, i have had them on for several years and am having a slight problem with sometimes it seems like one or sometimes both go into a cutback mode, go down to low rpm's and then if i wait just a few seconds i can apply throttle and get back up and running. someone said that if i have the batteries to 1 then thats when only one engine does this and then if i have them set to 2 both engines do it and suggested that it is a ground problem with one of the ecu's ? any help ?