Cisco's powers were a pretty important feature of the first two episodes, as he first vibed and saw Atom-Smasher, and then more crucially in the second episode he was able to see where Sand Demon was holding Patty Spivot. It was the start of a pretty interesting development for Cisco (although not as interesting as partnering him with Joe West, which sadly there was none of this week), and the show is wisely choosing to take its time with him becoming his alter-ego Vibe. It gets a brief mention here, but not really enough to clarify exactly what's happening with them. We do know he still hasn't told anyone apart from Professor Stein yet, but it does seem as though the vibes have kept happening, even if they haven't been show on screen. Will he tell Barry and Caitlin next week? And how much longer before he really starts to gain control of them (and then presumably gives himself the nickname)?