Actually, what you’ll feel is the added torque. Torque at the flywheel is multiplied through the transmission and differential (by the overall gear ratio) to an even larger torque at the rear wheels, (rwTQ = fwTQ*GRtot). The torque at the rear wheels results in a force at the contact patch, which goes as the torque divided by the radius of the tire, (F = rwTQ/Rtire). The higher this force, the larger the acceleration (a = F/m). The acceleration, and hence torque, is what you feel. Torque represents the ability to do work. Power is just the rate at which work is done, (P = TQ*angular_velocity). Putting a smaller pulley on the supercharger forces in more air at any given engine speed, (which also means more fuel gets injected), so torque goes up. Therefore, the answer to your question is yes…you will definitely “feel” the difference!