I was always told a Turbo is free HP since its fed by exhaust, but builds a lot of heat, and the chargers eithe roots or snail are crankshaft driven and in turn require hp loss to spin, but dont build nearly the heat. The charger systems have come along ways with built in intercoolers, and such, but the turbo also has had some serious upgrades like ball bearings, variable veigns, and such.

Id still LOVE to boost the Demon, but the 10.8 compression will require a lot of reworking the engine.