Post your ScanGauge setup & Adjust %

[brucepick]

Originally Posted by RH77

Bruce -- just checking, do you have the fuel setting to "Hybrid"? The SG will stay active when the engine is off, but keyed back on...

-Rick

Yes, it's set to "Hybrid" for that reason. But I'll double check, just to make sure it didn't get knocked off its setting due to some mishap.

Thanks.

[FastPlastic]

Originally Posted by PaleMelanesian

Both ethanol and winter-blend rfg have lower energy content than summer gas, with more oxygenates. Both together is a double hit. Since the Scangauge only measures airflow, it doesn't know that the ECU is adding a little more fuel to the mix to make up the difference. You need to INCREASE the fuel offset % to account for this. (ie. without adjusting, it reads higher mpg than reality)

That makes sense to me. The problem is my scan gauge was reading 1mpg lower then the final calculation at the pump(ie. the scangauge thought I had used more fuel then I did).

[MetroMPG]

PaleMelanesian - of course. Thanks for clearing that up.

[COcyclist]

I "re-calibrate" the ScanGuage II at every fill-up. I find it varies a few percent each time but the larger the fill-up the more accurate it is. I use the red button, MORE, FILLUP etc. and SAVE when done. I don't consider ScanGuage mpg values to be absolutely accurate but the instant feedback is very useful.

I use:
MPG WT
LOD MAP

The Scanguage temperature readings are much more accurate than the factory temp guages as they have been "idiot lighted" in many modern cars (important when grill blocking). I use the MAP setting to monitor boost in my turbo car and I will cycle through and monitor intake air temps too.

I find the CURRENT and TODAY trip mpg TRIP readings useful as well.

[TestDrive]

Just got my Scangauge II yesterday, so too early to say what normal setup is.
I notice two anomalies during pulse and glide.

1. Horsepower (X-guage) reads a constant 3.x with EOC.
2. GPH (Gallons per hour) reads a constant 1.53 with EOC.

Fuel Type is set to Hybrid.

Is this typical/normal SG II behavior???

[Matt Herring]

I've only filled up and calibrated my SGII once in the Prius I just purchased so it still has some tinkering to be done in regards of the percent but I'm running 8.8% right now and the SGII was about 1 mpg off of actual fill numbers on my first fill up.

I use RPM TPS
MPG FWT

I like monitoring RPM to help me maximize FE up larger hills. Uphill, I will sometimes see RPM over 2000 and gently let my foot off the gas to drop RPM's before reapplying foot to pedal (which usually results in RPM settling in around 1800)

I also just started using TPS to monitor throttle position. It reads 13 when my foot is off the pedal so when I get the Prius into "dead band" I have found that any throttle over 13 knocks it out of dead band (over 40 mph also knocks it out of dead band). With 13 being my baseline TPS there is a little give in the pedal before TPS goes higher so I can still accelerate with a little throttle in dead band.

MPG I use just as a guide vs. using the mpg bar on the Prius stock in-car display...just kind of a reminder to lighten up on the pedal if I see MPG dipping.

FWT I also just started using as I installed a grill block. With upper blocked and one row of lower blocked I run around 180-190. With temps on the rise I just want to keep an eye on temp.

[PaleMelanesian]

The 41 mph cutoff is programmed in. It's to protect the motors in the electric CVT mechanism from excess rpm damage.

I know diamondlarry only has a 2% offset or so. I suspect the bladder in the Prius tank got you.

[Matt Herring]

Pale,

I've only filled up my SGII once so I probably have some margin of error in my current SGII percentage. After a couple fills I should be close to smack on. My current tank numbers look like they are running about 1.5 mpg lower on the SGII than actual (comparing my last fill to the in-car mpg numbers). Running somewhere in the 58-59 mpg range on current tank after 275 miles.

[caissiel]

I have a Turbo Diesel truck and set my Scangauge at every fill-up. When I first installed I left it at 0 and then when I filled, lets say 20 Liters or more I reset it and so far its been within 2% which I feel is not bad at all considering diesel fuel foams a lot and tank differential can exist. I found there is different readings for different fuel pumps. I do use a lot of fuel when I haul my camper and refuel maybe 2 times per day. I have a programmer and on stock it's close to 0% adjustments. On load A setting of the programer its at 17% more fuel to fillup, making the MPG reading much better. and at setting B on the Programer its at 37/43% setting making it much better on fuel millage. So I usually use load A and set the SGII at 17% on the plus side. I am very happy with this and most of the time the readings are equal to the hand Calc. numbers. So far I have raised my towing MPG by 2 and my Highway unloaded millage by 4. The best values have come with the cruise on. Most truck hics are not adjustable and never show the instant mileage easily, so the scangaugeII has been great for me. Yes my truck could show 8.9MPG and 129MPH. Or maybe lower MPG because at that speed I move tons of air that requires lots of fuel.

[jas88]

Mine was very close out of the box:

Speed = +1
Fuel usage = +2%
Cutoff = 21

Right now I have my gauges as follows:

AVG TPS
MPG IA

I love the SGII. What a great tool and I never heard of it until I visited Ecomodder.com. I find the instant MPG and TPS readings helps me keep my foot out of it and hold steady throttle. I would say I have gained about 1MPG in just the first week using the SGII.