Re: Conversion table

["Walter Sherwin" <wsherwin@idirect.com>]

>>
>> MAP1volts out = Vref(.01059*[Kpa] - .10941)
>>
>Please elaborate,
>



Vref = The nominal 5 volt excitation DC voltage for the MAP sensor, supplied
by the ECM/PCM.  Not always exactly 5 volts, so a good idea to measure
yours, to be accurate.  Consider this a constant in the equation.

MAP1volts out = The DC signal voltage produced by the MAP sensor in response
to the prevailing manifold absolute pressure.  This is the voltage which is
read by your ECM/PCM and displayed on your scanner.

The formula above is a basic linear equation.  You know Vref, you can
observe MAP1volts out from your scanner, and you can in turn then
algebraically solve for Kpa.



Walt.

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