boost control and retard timming on boost

[Geri]

You don't need to retard timing on 10psi boost. If you're blowing bubbles when it's boosting the odds are good you've blown the head gasket.

I think you mean to say you dont need to retard the timming but its a lot better if you do,From my understanding no kits have this facility .
But for the perfect tune on nearly always on boost it seems logicial..
And bubbles I do have..

No, not at all - I don't see any good reason to retard at that power level. My bike has run 1.2bar on stock timing and pump fuel (on the dyno) for 405hp. As I understand it retarding the timing can actually cause mis-firing earlier at higher boost levels on the stock ignition system because you are trying to light the spark with higher cylinder pressures due to the piston being nearer to TDC.