Logging Boost?

How accurate is the MAP-BAR Sensor method of logging boost?
MAP - Bar Sensor
[PID.11.PSI]-[PID.2340.PSI]

I tried and I was getting -8.31-8.09psi at idle and part throttle cruising. AT moderate throttle(57% etc) it went to 1.93psi.

Is that negative psi normal for a 1bar?

2005 C6 with A&A SC kit.

Normal.

Quote:

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Originally Posted by DSteck

Normal.

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So if I'm looking for 9lbs of boost it should show +9.0 psi?

Yes.

You need a sensor capable of measuring boost. The one bar only reads to around 1 psi.

Quote:

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Originally Posted by flame

You need a sensor capable of measuring boost. The one bar only reads to around 1 psi.

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This.

You can't log boost with a 1 BAR sensor.