Help needed....

[JohnA]

If it were my engine, I'd fit a small nozzle there first (say 0.4mm), activating it a few psi before maximum boost and watch for the results.
Then perhaps experiment with activating a bit earlier (still under boost) and using a bigger nozzle.

The difference in SC discharge temperatures might be quite interesting . Just make sure that atomisation is good, you want a fine mist to be evenly spread.