nascarnation -
Quote:
Originally Posted by nascarnation
cfg83 - I agree 100%
the typical o2 sensor is a narrowband and can only "read" a few tenths either way of stoich
so if you're running in closed loop, you're very near or at stoich
the resistor mod will fool the scangauge and make it look like the mileage is higher but it isn't
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Yup, that's what I observed (garbage in, garbage out). ...
time passes while I search through crap ... Ok, I found the numbers I took down when I did the test last year. This was on a very short and almost-flat 1.5 mile run that I kept "round-tripping". You can see that the South MPG is higher because that is the downslope. The conditions were very stable for every run. This was before my 5th gear swap, so my cruise control still worked. In my opinion, CC on the (almost) flat reduces "the human right foot influence" during ABA testing.
(EDIT: The CC MPH was set at 30 MPH) Here are the numbers :
July 5th, 2007 around 1 PM with an outdoor air temperature of around 90 degrees F :
Code:
Run 1
Resistor simulating 200 degrees F (as reported by Scangauge) :
56.1 MPG North
57.6 MPG South (electric fan came on)
57.5 MPG North
57.07 MPG Average
Run 2
Resistor simulating 247 degrees F (as reported by Scangauge) :
65.3 MPG South
59.8 MPG North
65.3 MPG South
61.3 MPG North
62.93 MPG Average
Run 3
Restored to "normal" Hot Air Intake with real IAT, 132 degrees F average :
57.7 MPG South
51.3 MPG North
57.7 MPG South
53.4 MPG North
55.03 MPG Average
As you can see, the numbers jump right out at you. The car drove exactly the same. No hesitation at higher MPG.
CarloSW2