As story goes now, Wally lived his life normally and formed the Titans until he got lost on the speed force due to Kadabra/Manhattan, whoever. Later he returned.
Due to the sliding timeline nature of comics, the period in which he was lost is going to get smaller and smaller and matters little.
However, a heart condition put in him while he was Kid Flash establishes that he's been the inferior speedster from the start opf his career till now. And that, I feel, has to go.