just got my SGII (ScanGauge II) few questions for the collective..

[Chris D.]

I just got it (havent calibrated it yet, but dang this is neat!

is there a way to reprogram the MPH due to different size tires?

[Lazarus]

Originally Posted by Chris D.

I just got it (havent calibrated it yet, but dang this is neat!

is there a way to reprogram the MPH due to different size tires?

Page 18.

Both speed and distance can be adjusted to compensate for changes in
tire size, gears, tire wear, etc..
The setting can be changed at any time. If SAVE is not used, the
entered value will be lost when the ScanGaugeII is disconnected. This
may be the desired operation if the vehicle is not to have the
ScanGaugeII regularly used on it.
< 0% >
0=> 0 SAVE>
The right and left upper buttons can be used to increase/decrease the
selected adjustment in 1% steps. The lower left number is the speed
reported by the vehicle. The lower right number is the speed which will
be shown by the ScanGaugeII by applying this correction

[Chris D.]

yeah, this is what confused me, heres my tire difference..

according to my sg2 booklet, it can only go by solid percent numbers.. correct?

my tire size is smaller by 1.8%
so would I be negative -2% for my setting?

[Chris D.]

I've adjusted my SGIIX with the proper percentage and it never differs from that of the speedometer..

Does the SGIIX recalibrate the stock speedometer reading to match what the SG reads now?

donno..

[cfg83]

Chris -

I would use a GPS in comparison to the car's odometer. It won't solve the 1.X % issue, but I think you will have the best possible accuracy. If you don't have a GPS, I'll bet one of your friends does.

In terms of inputing the percentage, you can always do a correction in your fuel log. That's what I do for my fuel log :

Fill date 	Distance 	Fill amount 	MPG 	
2008-04-07 	194.7 mi. 	4.946 US gal 	39.37 US 	
Details
Ignore high/low MPG, only look at AVERAGE MPG (Chevron;87 Octane;$3.64;#9). 
Tires are larger, so odometer is reading 2% less, hence +2% 
correction: 190.9 * 1.02 = 194.718. EFIE off. 
Needed to add 1/2 quart of motor oil during this tank.

CarloSW2

[cfg83]

Chris -

Originally Posted by Chris D.

I've adjusted my SGIIX with the proper percentage and it never differs from that of the speedometer..

Does the SGIIX recalibrate the stock speedometer reading to match what the SG reads now?

donno..

I don't think it would effect the stock speedometer. You may just be "lucky" in the sense that an error in the speedometer matches the percentage in the SGII.

How fast did you go? Did you reach highway speeds?

CarloSW2

[Chris D.]

I already do a correction for my fuel log for tire size, i'd like to eliminate that..

to make up for my slightly smaller size tires.. 100% - 1.8% = 98.2 % 444.1 miles X 0.982 (which is the same as 98.2%) = 436.106 miles 436.106 miles / 14.766 gals = 29.534 MPG!!!!

[Chris D.]

I did freeway speeds, but I was dickin around with other aspects of the guage..

dam this things neat..

mounted my SGIIX on my steering column..

The column is contoured so I had this idea to use a piece of wood and a heat gun to fix that contour, but only for where the SGIIX is going...

I first pulled the upper column cover off to make sure no wiring was directly underneath..
I put everything back on and went to town on it with a heat gun..
Now it sits right in there with the angle just right at me now... slightly tilted back..
I cleaned the column and SGIIX with alcahol and added some velcro to ease of install..



sexy..

[PaleMelanesian]

Sg will not affect the stock gauges. I've adjusted mine to match the odometer, with a known slight error from reality. Run through a whole tank and see how they match up.

[Chris D.]

ok, so since I'm a SG n00b, can anyone give me advise for driving with FE in mind to start reaping its benifits..

so many options..

I've been watching my Engine Lod, throttle position, mpg and voltage so far..