at 25 psi the suppercharger has to spin about 25000 rpm and that will last about 30 min. if my memory serves me right the speed of the SC is, stock 14000+ ,, the sc pully or the 178 will take you to about 16000+ ,,the 181 pully =17000 and the 185 to about 19000 rpm that is anything above 20000 is not good
buy the turbo srt6 and you can have all the boost you want.
some one will have the exact numbers for you there are people running two pullies and are turning the max rpm for the SC don't forget this max is only at wot. jim
the ecu with a tune will not be a problem.