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Agreed. I have been a fan of the BMW valvetronic system and it is a step forward though it is only offered on their biggest engines? Multi air looks very flexible and should actually accomplish most of what I was looking for. Is any car maker using it? These are both "brute force mechanical" solutions but pretty effective. Keep in mind when considering the magnetic demands of an electronic valve train that the magnetics could be employed to move the valves in both directions with infinite control range of the available acceleration. The valves could move very quickly through most of the range of motion without slamming at either end. And only a very light helper spring would be needed as a fail safe and modern valves themselves are very light. Complete computer control of valve timing with Multi air or similar magnetic system along with direct injection will bring a quantum leap forward in broadening the sweet spot on the BSFC map in both aspects of rpm and load. Load almost becomes an obsolete term being replaced by percentage of maximum request in an engine with no throttle plate.
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