Your gauge is already the correct reading, the a/f corrected reading is for your primary o2 sensor. The benefit of having both is you can see of o.e goes bad. Thats how it worked for me - I installed my new aem wideband and it was different than my afr reading in flashpeo. My tunner adjusted fuel tables and the afr in flashpro didn't change, so I needed a new primary o2 sensor.
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