So, you've actually done this, then? You've actually ran an engine with 1/2 of its injectors and/or spark plugs not firing? It isn't all that hard to do, you know, to spoof the O2 sensor into not seeing the excess oxygen being pumped into the exhaust stream by the non-working cylinders.
Quote:
Originally Posted by arcosine
He is not taking into account the lower manifold vacuum due to the 2 active cylinders working harder to keep up, the engine would be at full throttle twice as long with half the cylinders. I would go as far to say that under load it would have half the manifold vacuum and thus half the pumping loss. Of course if the valves were deactivated then it would have half the vacuum and half the displacement for 1/4 the pumping loss of a full engine.
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Where did you get your numbers?