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The mathematical side of myself would love to see an actual graph of this, overlaid with the compressor map of the turbo in an appropriate scale.
I would love to see if what I think (that the turbo would require a variable amount of torque, and thus highly variable amount of HP) would be correct. I would guess that at lower RPM's, when the turbo is spooling, it will of course create a significantly larger restriction than when it was fully spooled, and having it's turbine speed moderated via ECM with wastegate controls. Obviously, even with the wastegate open, it's still more of a restriction than N/A. I'd just like to see whether or not it's as variable as I think it would be, whereas a S/C will of course require an almost static amount of torque to spin per revolution, creating a larger torque demand with RPM of the engine.
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