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Old 10-26-2010, 06:22 PM   #4 (permalink)
Frank Lee
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Seems like peeing into the wind to me.

Variable displacement systems shut down intake and exhaust valves on the disabled cylinders. If it was as easy as adding a butterfly valve to the intake, that's the way it would have been done OEM. If the valves are still working, there will still be pumping losses from the intake tracts and from sucking/pushing into the exhaust tracts.

So the trick will be to disable valves. I believe it can be done at home, but it would be quite involved.
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