Is this graph reading normal?

It’s been a while since I hooked my AEM up but the white wire is the power logger input and I think I grounded the brown wire at the ground on the I/O board.


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Has your graph always looked like that? The wiring or the unit itself could be messed up.
 
The O2, wiring or the gauge itself is faulty. I would start with the wiring.
 
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Maybe I’m not understanding the instructions but since the gauge has a separate ground wire I read this as the analog output should be connected this way.


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Red is switched power, black chassis ground, brown sensor ground and white is the 5v signal that goes to the wb input of the i/o board for the pl. Other 3 wires not used. According to the instructions they want the bung 18" away from the turbo too.
 
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