Currently, I'm working on an app which should show Gauge value (inHg) of the vehicle using OBD reader. Which values should I use to show the Gauge? Is there any formula?
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"Gauge value" isn't specific enough since it could refer to multiple fluids. Are you talking about intake air, fuel or engine oil? – Zaid Aug 28 '18 at 8:56
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@Zaid it should be air and fuel mixture – Chathura Wijesinghe Aug 29 '18 at 7:00
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Gauge pressure (GP) is linked to absolute pressure (AP) by atmospheric pressure as in :
AP = GP + atmos p
Units can be Bar, Pascals, psi, mmH2O, inHg etc
But you can have them selected based on location ie Bar works well in Europe, psi in UK etc
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Thank you for your answer, Do you have any idea OBD II ELM327 commands? – Chathura Wijesinghe Jul 31 '18 at 0:40
