Ehui travelled north along with Republic of Ireland Under-21 captain Michael Timlin, although Timlin returned to the Premiership club for treatment on an ankle injury.
Iron boss Brian Laws reckons their presence has acted as a catalyst for his side, and hopes to extend Ehui's stay in North Lincolnshire until the end of the season.
He said: "Since they've been here we've seen a turnaround in our performances and I haven't changed the team around.
"But although they haven't contributed much on the pitch they have played a major part just by being here "