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On my vehicles (2 Nissans essentially) the MAP reading doesn't seem to work right. I'm sure things will vary from car to car. I do like the resolution I get with the LOD guage on mine, since it does vary from 10 to 99. I can push it right up to 98 without a downshift, but just a bit more of a squeeze I'll get a guaranteed downshift.
I assume the LOD guage is a calculation of the theroetical load by reading different sensors, but I wonder how it is calculated exactly? My guess is that it has to do with speed, rpms and throttle position, but it will also vary depending on the grade of hill I'm going up (there's a lot of hills in the Ozarks.) So is it the MAP reading that also comes into play when calculating the LOD?
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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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