MAP sensors

[rrauscher at nni.com]

Wow, now thats diy! I don't know the bar equiv, however in
KPa map sensors/ecm code typically ranges from 20 Kpa to
104 Kpa or so. The 104 top end is used for baro detection. 

Yep, the GM map sensors are absolute pressure.

MAP = manifold absolute pressure

BobR.


>I have made my own MAP sensor from a differential bridge sensor (-1 to 0 bar).
It 
>works fine but I'm unsure of the expected range on a manifold, so far I've
only 
>managed to get down to -780 mbar. If this is about typical I can alter the
gain and 
>span to get better resolution over the expected range.  My sensor also is 

>differential to atmospheric pressure, where as the OEM sensors do not seem
to be, 
>is the correct?
>
>
>
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