Can the standard 1 bar MAP Sensor be replaced with say a 3 bar unit?
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I know from experience that the 2 bar map (that comes with the GM supercharger package) won't work with the stock PCM programming... the car wouldn't start.
no it wont work the voltage maps for each map sensor are completely different
Thanks 97cavie24ls
On the standard connector is the center wire the sensor output?
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i think it says on the map sensor , gnd 5v and something else , im not sure what pic is where in the plug
[quote=97cavie24ls(JDM&00s/c sedans™)]i think it says on the map sensor , gnd 5v and something else , im not sure what pic is where in the plug
that would be PIN in the plug
SPD RCR Z -
'02 Z24 420whp
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'04 GTO 305whp
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'78 Buick Opel Isuzu W41 Swap
The MAP sensors are avaliable in 1,2,3,and 4 bar. 1 bar is vacum reading and is calabrated in the PCM for only that 30 inchs mercury would pull a 0V and 5V would be 0 inchs mercury. On a 2 bar the calabration would be 0V at 30 inchs mercury and 2.5V at 0 inches mercury and 5V at 14.7 PSI. Every bar added creates a sensor that will read 14.7 psi more.
3 wires are: ground, 5 Volt, and reference.
Hope this makes sence?
-Aaron
www.TurboTechRacing.com
Performance Parts For Cavalier, Sunfire, Cobalts and More!!!
Thanks TTR. Looks like I am connected right as I am getting a varying output to the SAFC-2.
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