What is your fuel calibration set to? Mine is +11% to +12% right now (Or is it 112%, I don't remember)
The SG needs to have a sample of miles traveled to fuel used to make the fuel flow gauge accurate. And like I said before, the fuel cutoff must be adjusted as well. Don't forget to press done, enter cost per gallon and save when you fill up.
Mine is within half a liter on most fill-ups now.

In short it sounds like you're basically teaching the scan gauge to report what your consumption is. The problem I have with this is I was hoping the scan gauge could help tell me if I have a problem. The only way it could do this is to calculate mileage based on parameters posted by the car's computer. The fact that you have to adjust the mileage to reflex actual use indicates that the unit can't pull info from the cars computer to obtain accurate mileage. So if you do have a issue some where in the system you would end up adjusting for the problem and assume all is right with the car. This characteristic limits the SG to a simple trip computer instead of an analytical tool.

I don't think that a simple calibration step negates the tool's usefulness as a diagnostic tool....You shouldn't have to re-adjust it once it's done.

What condition are you attempting to diagnose? If you are seeing a calibration number significantly different from other owners it could help diagnose an issue. You can also read the fuel trim values. I'm not sure what you're looking for...

Found this thread through Google, had to reply even though I own a Speed6. :rolleyes:

ScanGuage is reading the MPG/mileage directly from the car's computer, so you're not teaching it anything. However, ScanGuage needs to know how much gas you are FILLING your car with each time so it can create accurate trip and other avg calculations.

Since abm temp and pressures can change the way the pumps read "full" you will most likely have a variance from what ScanGuage knows to be the amount you should have filled up. This is what you are correcting.

For example: If you used 13.3 gallons of fuel and filled up on a hot day the pump may read 12.9 gallons since the gas is warm and has expanded. The gas in your tank has also expanded leaving less room for fuel before the pump hits the preset pressure to know "full". You need to tell ScanGuage of the variance so it can correctly make its long term avg/trip calculations and know the exact amount of gas added to the car.

If you read the manual one of the most important steps they tell you is to go to a pump of your choice and fill up. Then drive the car for a few days and fill up at the SAME pump around the same time (if possible). This keeps the pump variance to a minimum and allows ScanGuage to get a good accurate first read.

ScanGuage is accurate, but I've noticed some gas stations are alarmingly off vs. others. For the most part I only have 1-2% of variance between fillups and my deviation is around 10-12% typically. Depending on the temp/location you may experience something different, but the variance between fillups should only be a few percent off.

Hope that helps. You're not teaching it anything, just helping it calculate a normal deviation which it has no way of knowing. Hope you enjoy!

I've gotten around 600 hp readings. I disabled if shortly after. HP numbers are worthless.

maybe MM's turbo upgrade is more effective than previously thought :lol2:

I've gone out and seen my ScanGauge turned on when the car has not been touched for several days or a couple of weeks. Anyone else had this problem? It seems to turn on if it sits for quite a while.

Yes I have had the same problem on ocassion. Not sure what causes it.

Thanks, this dose answer my question. Much appreciated.

LOL.....yeah mine showed me 365HP the other day in 1 degree weather.

Funny you mention that. Mine was on too the other day when I got in my car.

what does the scangauge use the engine type setting for? i set mine for two cylinders :lol:

How do you get to the HP reading? Or does that have to be programed? Sorry, too lazy to search.

couple pages back in this very thread.. you know you can do it ;)

Damn, your gonna make me work! Damn You CnnmnSchnpps!!!!!

Tried making an Xgauge for the O2 sensor today. I get values for bank 1 sensor 2, but I'm not sure how to interpret them. The Xgauge PDF says the values will be 0 to 99, and so far I have seen values anywhere from 20 to 80. I was hoping this would be a lambda reading but I guess not (I doubt my engine would run at 3:1 AFR).

Anyone have success with this gauge and knows what it means? Better yet, anyone with a WBO2 and a scangauge want to try and correlate the values?

Set up the STFT/LTFT readings today. Haven't driven it yet but at idle my LTFT was at 17 (I assume 17%???) DAYUMN!!

^ +1

+1 for the DAYUMN or +1 for also having 17% LTFTs?

haha +1 for correlating the values! (didn't you see my edit comment?)

Lol I unconsciously filter that.. people almost never use it.

There are actually two sensors that I am really interested in getting data on right now, MAF and WBO2.. The problem is that both of these are non-linear so the best we can ever get with the scangauge is an approximation (since the math function of the Xgauge only does multiplication, division, addition, substraction). Damn..

02 sensor readings....
 

i am just going to put in my first couple of xgauges today... but i am just as interested as everyone else about the oxygen sensor readings...

apparently the display reads a value 0-99. i have not looked at it closely, but based on the attached PDF that was posted earlier.... shouldnt we be able to adjust the MTH(math) to scale what is displayed into a meaningful number???

i think it would maybe be important to have someone log AFR's(Cobb AP/EMU/O2 sensor) while also reading the scangauge display; to plot a set of data

if someone could catch me up on any specifics of what values are actually being transmitted across CAN... i can prolly hook up with Kane and compare scangauge readings to known AFR's......

yep... I have ltft and stft xgauges enabled now.

the one I'm really really interested in is the cat temp sensor from the odb2. I had that with dan's canscan + pda software, and it was really nice to have. I liken it to an egt gauge.

trims are both bank 1 correct? i thought i saw someone say they had outrageous numbers like 20??? i just don have time to catch up anymore :(

you still have your cat??? holy shit... i didnt know that.

i wasnt aware that cat temp was on the CAN... but i suppose it makes sense since mazda wants to monitor it and keep us pig rich to not burn it up......

would be nice if we had someone on the inside who could supply us with addresses(right term?) for some of the data on the CAN.......

thats why the accessport is so nice. I select the maps that are adjusted for the proper trims, so the car doesn't have to find out how much fuel to add/remove since it's closely matched to what the car wants.

I don't have the cat, but I have all the oem sensors in place.

I made a video back in 2006 of the Palm OS running the CanScan - If you look at 0:35 sec into the footage, you'll see I can select cat temp and it graphs the numbers on the palm:

http://video.google.com/videoplay?do...arch&plindex=0