UEGO problem
#4
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I've never used one but i'm pretty sure afpr don't change fuel pressure until they see boost. It's also possible that you have the afpr hooked up wrong. You might want to explain how you have it routed so those that know more about them can help you. Your stock FPR controls your fuel pressure outside of boost so you wouldn't see any changes at idle.
#5
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Make sure that the harness that comes up from the sensor is securely plugged into the gauge itself. As long as you have power and ground (which you do because the gauge is powering up, and hopefully going through the default warm-up sequence), the only problem could be the sensor not communicating. With a WBo2, the slightest tap on the gas will make a change in readings.
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