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Page 42/55 UltraGauge™ EM User Manual www.ultra-gauge.com
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UltraGauge Setup ..
Compatibility ..
KWP/9141 Optimize
The 9141 and KWP2000 protocols are very inefficient. The more engine specific gauges displayed on a page, the slower the
page will update. This can be witnessed by watching the health indicator beat rate. For all other protocols, the health indicator
beats about once each second. With 9141 and KWP 2000 the update rate can be as long as 2.2 seconds.
With this setting, the update rate for some 9141/KWP vehicles may be improved. By default the value of this setting is 100,
which corresponds to the most compatible setting. As this value is reduced KWP/9141 performance and the display refresh rate
increase. Some vehicles function without issue with a setting of 1, while others require the slowest setting of 100.
When this menu item is selected, the KWP/9141 Optimizer starts. The Optimizer will determine the optimal setting for the
particular vehicle. When complete the optimal value is displayed. The value can be accepted by pressing “MENU”, or it can be
manually overridden by entering a new value using the UP/DOWN keys. A value less than the Optimizer value should never be
manually entered.
It is recommended to run the optimizer a few times, and then use the resulting largest value.
For some vehicles manually setting the value too low will actually result in potentially anomalous behavior, such as:
Slower update rate
“Err” seen occasionally for various gauge values.
“Comm Lost, restarting” message during initial gauge discovery
1.
This is an optional setting and should only be used if you are dissatisfied with the update rate
NOTE: The ignition must remain in the RUN position. The engine should be off.
NOTE: This setting is applicable to ONLY vehicles with the 9141 or KWP 2000 Protocol; it has no affect upon other protocols.
NOTE: As an alternative, the update rate can also be increased by reducing the number of “engine specific” gauges on any
given page. Setting the “Pwr off Detect mode” to a value other than 0, may also increase KWP/9141 performance.
NOTE: If UltraGauge is moved to another KWP/9141 vehicle, it will be necessary to run the optimizer on the new vehicle. It is
advisable that the value be set to 100 prior to moving UltraGauge to the new KWP/9141 vehicle.
NOTE: If manually setting this value results in UltraGauge not functioning, follow this procedure to restore UltraGauge
Unplug UltraGauge
Press and hold the Menu Key
Plug in UltraGauge
Holding the Menu key will cause the menu to appear.
Return to the update rate and set it back to a known good value.
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UltraGauge Setup ..
Compatibility ..
Force MPG Sensor
Forces UltraGauge to use the MAF or MAP sensor to calculate fuel usage.
Force MPG Sensor Setting
Description
Auto UltraGauge
automatically
determines the best sensor to use
MAP
UltraGauge is forced to use the MAP sensor
MAF
UltraGauge is forced to use the MAF sensor.
Normally
Auto
is the correct and desirable setting. Certain vehicles misreport the presence of a sensor. When this happens,
UltraGauge is not able to calculate the fuel usage and various mileage gauges may display “Err” or nonsensical values. All
other gauges display correctly. This setting is used to override the reported sensor presence and forces UltraGauge to use the
selected sensor. This problem is common on F250 and F350 Ford diesel trucks. Typically the presence of MAF is reported
when it is not present. In this situation, setting Force MPG Sensor to “
MAP
” will resolve the issue.
