Map sensor, does this really matter?

[RipperXX]

I just got a electronic autometer boost gauge, since im hopeing the mechanical one isn't dead on.


Anyway the instructions say to mount the MAP sensor with the nipple faceing down, is this really required for it to work correctly??? This would mean I will have to fab up a bracket if so, and im pretty set on just screwing it on the firewall.

 

[tom04841]

the reason for mounting the sensor w/ the nipple downward is so moisture cant collect in it and short out the sensor. Just make a bracket and mount it to the firewall.

 

[1997GST]

in regards to the remote sensor reading boost, no placement will not matter at all. Pnumatic instruments don't 'read' gravity. I could see a very slight difference with say a hydralic sensor, but placement shouldn't matter regardless.

At least an electronic gauge will be slightly more accurate. I'm fine with my autometer mechanical boost gauge. But otherwise electric are the way to go.

 

[1997GST]

the reason for mounting the sensor w/ the nipple downward is so moisture cant collect in it and short out the sensor. Just make a bracket and mount it to the firewall.

good call on the moisure, completely overlooked that when responding. Makes me wonder why some map sensors from the factory on N/A cars aren't mounted in the down spot.