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Old 05-28-2009, 10:10 AM   #1
growling_boxer
Scooby Specialist
 
Member#: 165744
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: Eastern PA
Vehicle:
2000 LGT
2007 STi

Default ScanGaugeII - Oil Temp?

The default scangauge oil temp reading doesn't work on my STi, but I have seen that dashdaq claims to have oil temp in their extended set of Subaru readings through OBDII. This seems to imply that I could use the custom XGauge to get oil temp readings on my scangauge. Has anyone figured this out? Or does anyone know where I can find transmit and receive IDs to try making this xgauge code myself?

Oil temp was the main thing I wanted to monitor when I bought this (and I wanted to read and clear codes). The MPG readings are bogus unless you always fill up at the exact same pump and never drive differently (this thing is way off for about a week after a track weekend). So, the only thing that has been remotely useful other than the code reader/clearer is the speedo, which has a terrible update rate...but it does give me the real number instead of the one on the dash, and it allows me to compensate for oversized tires.
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Old 05-28-2009, 01:44 PM   #2
Bluefoton
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Member#: 141373
Join Date: Feb 2007
Chapter/Region: E. Canada
Location: Quebec, QC
Vehicle:
2008 2.5i-hatch -
now with a HID retrofit

Default

Why are the MPG readings useless? They are not related to fill-ups at all. You get the instantaneous. trip, and daily mpgs fairly accurately. The fill-ups are needed only to see the nr of miles left / gallons left in your tank.

As far as the speedo goes, the Scangauge also calculates it based on your tire rotations per minute (and a default tire diameter) - there is nothing to make it accurate unless you calibrate it (which is why you have that option). Your only call is a GPS from which you can then set your Scangauge speedo, and see if it matches the dash speedo.
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Old 05-28-2009, 02:09 PM   #3
growling_boxer
Scooby Specialist
 
Member#: 165744
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: Eastern PA
Vehicle:
2000 LGT
2007 STi

Default

Quote:
Originally Posted by Bluefoton View Post
Why are the MPG readings useless? They are not related to fill-ups at all. You get the instantaneous. trip, and daily mpgs fairly accurately. The fill-ups are needed only to see the nr of miles left / gallons left in your tank.
the numbers change by a good bit if i fill up at a pump that shuts off well before the top of my tank, which seems to happen fairly easily with my STi for some reason. when I am actually able to fill all the way up, it changes the amount i fill by 2-3 gallons. just that difference starts throwing off the MPG numbers by about 10% for the same style of driving on the same route. After a track day or two, it gets extremely confused and my MPG ends off by 50% or more, and it takes a couple fillups to recalibrate. It seems to estimate everything without being related to the level reading. I assume it is using something like the TPS to estimate the MPG.

Quote:
Originally Posted by Bluefoton View Post
As far as the speedo goes, the Scangauge also calculates it based on your tire rotations per minute (and a default tire diameter) - there is nothing to make it accurate unless you calibrate it (which is why you have that option). Your only call is a GPS from which you can then set your Scangauge speedo, and see if it matches the dash speedo.
i did calibrate based upon distance as it explains in manual. at 0, it reads the real number rather than boosted number on the gauge for stock size tires. when I go up 2 tire widths without changing the sidewall ratio, the 2 setting works beautifully. now when I drive past a radar sign, my speed is dead nuts on what is read by the sign. I don't need no stinking GPS...thats what my compass is for
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