OK. your dealer (salesman) is an idiot.All it does is at a certain RPM, a solenoid controlled by oil pressure locks the rocker arms together with another rocker arm riding on a bigger lobe (with more duration) on the cam. It changes your valve timing.Some of the newer ones actually advance or retard (rotate) the cam in relation to the piston movement.Hondas don't have cylinder shut off (they don't need it)