Is it actually a MAP sensor?
If it is sensing boost, where is this boost coming from?
I hooked my vaccum guage to it, and it seems to be reading intake manifold vaccum.

 

It is a MAP/Barometric pressure sensor. Not sure why they label it as the boost sensor.

 

what? did Nissan forget to put your turbo kit in? this happened to some other people I know. They got their max and saw the boost sensor, but no turbo! i'd go back and complain...

 

Thanks...
So...the last time I played with an fuel injected motor was my 86 IROC. That was mass air with a MAF. My brother had a 90 IROC which was speed density and used a MAP sensor.
I always thought a fuel injection system was either mass air or speed density.
So, I suspect our maximas are mass air, but with a MAP for some extra fine tuning. Is this right?

 

damn smartass

 

does it matter where it is located at ?
Cuz i took out my snorkel and its just hanging there about 6"- 1ft lower than it should.

 

Just zip-tie it somewhere out of the way

 

Yeah, there's a long drawn out explaination in the nissan fast program. But everyone has pretty much got it. mine is just ziptied away from the fans.

 

The Boost sensor is only there to tell when the EGR valve is opening by sending a difference in pressure to the PCM.