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Originally Posted by ehagerty
So then I wonder for those that are not doing any electronic engine moding would the figures be more accurate? I mean if your not running a JB/tune/etc does the reading feedback from the ECU corilate better values? I have heard the factory speedo readings are not the most accurate themselves.
Per the website this is supposed to be the values that can be read from the ecu thru the gauge
Boost/Vac
Coolant Temp
Oil Temp
Intake Air Temp
Exhaust Gas Temp
Throttle Plate
Speed
RPM with Shift-light
Battery voltage and more.....
Just curious.....
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The speedo is about 5% optimistic compared to the speed on my radar detector which is gps speed. As far as the reading being more accurate they should be without a piggy back tune like the jb4 for the reason I explained. Since the ECU is being tricked it is reporting what it things it's doing but not accurately. And those all seem to be options that it can do. If you watch my video I look through all of them.