The term blown out means it doesn't spark for whatever reason, usually too high a pressure, remember turbo cars have TWO compression ratios not one, the latter CR is the adiabatic CR, that is when under boost, it then needs more energy to jump the same gap as it would without boost.
I don't know about this crap about using "resistor plugs and not conventional", all plugs in any ecu equipped car should be resistor, in fact I can't think of a single engine these days that isn't resistor plugs, emi can knock out ecu's, one of the reasons they are used.
In short just experiment with the gap so long as it sparks under all conditions it is fine.
tabetha