There's also a big difference between how nitrous affects an engine and how a blower or turbo does.
Nitrous is very violent, the cylinder pressure goes off the scale instantly. The ratings by "50 hp" have no basis since the power added isn't RPM sensitive - it adds 50 ft. lbs. etc. regardless of engine speed.
Blowers are much kinder, the "spike" in cylinder pressure is lower and lasts longer than even the same power developed by traditional high compression.
