I only know of 2 people that bought them in the UK, myself and Robof9.
Neither of us got satisfactory results and both put our EGO's back to stock.
I'm not saying there is or isn't anything wrong with the valve but from mine and robs experience your better off with the stock setup.
Consistancy was the issue, velocity spikes up and down were killing accuracy.
Peegee(Lucky Europe) offered to set mine up but i was already past the point of wanting to use it.