Bully Dog Watchdog - Manual (Page 26)

OperATION
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4. Now compare your calculated fuel economy to the average economy readout on the WatchDog’s
Driving Coach. Are they the same? If they are different use the formula below to calculate the percent
difference so that the fuel economy readout on the WatchDog can be adjusted. If they are the same or
within 2% of each other then adjusting the fuel economy readout is pretty trivial.
To calculate the percent difference use this formula:
WatchDog Average Economy - Calculated Average Economy
Calculated Average Economy
Example 1: Assume the WatchDog Average Economy is 24 mpg and the Calculated Economy is 21.
24 - 21
21
3
21
.142 or 14.2% round down to 14%
5. Once a percent difference has been calculated and it is significant as in the example above the
WatchDog fuel economy read out can be accurately adjusted. To adjust economy for an inaccurate
read out on the WatchDog enter the Main Menu then navigate to the Vehicle setup menu and
enter into the adjust economy Display menu. The diagram below illustrates the adjust economy
Display menu, on the screen is an example of how to make an adjustment for a percent difference
of 14.0%.
Percent difference =
1. Percent difference =
2. Percent difference =
3. Percent difference =
ECON DISPLAY
Select the percentage
to adjust economy by.
-14%
Adjustment %
Selected:
-17%
-16%
-15%
-13%
-12%
-11%
-10%
-14%
Go Back
to Vehicle Setup