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Something that would help with the draw when dfco occurs would be a huge vacuum leak. As others pointed out, the big air pump of an engine is causing issues, but it's not so much the pumping of air as pulling a heavy duty vacuum. Should you introduce a way of having wide open throttle with the fuel shut off and not causing a downshift, you would see major improvement. Easiest way to implement this would be a valve to cause a massive intake manifold leak at command, ie a second throttle body. But a second valve body wouldn't be detected by the computer, so it wouldn't attempt to downshift and shouldn't turn on the fuel. Adding a fuel pump shut off to the secondary throttle body/vacuum leak would be a good idea too.
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 RIP Maxima 1997-2012
Quote:
Originally Posted by jamesqf
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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