If you are interested in sea-level impacts of ENSO, as a reminder there are lots of tidal gauge records available. These records are noisy but they show excellent correlation with ENSO measures.
Unless the data is filtered, you won't pick it up
This is a recent paper
Miles, Elaine R., et al. "Seasonal prediction of global sea level anomalies using an ocean–atmosphere dynamical model." Climate Dynamics (2014): 1-15.
> " EOF analysis showed that the first two modes of seasonal SLA in both the reanalysis (Figs. 5, 6) and observations (not shown) are dominated by ENSO and the IOD."
For Sydney tidal gauge, there is some influence of the Indian Ocean Dipole that I noticed but the ENSO appears stronger.