Phram1

I have just had a g4+ extreme installed and am becoming familiar with the software. I have a PLX wideband installed and when dyno tuning found that the PLX gauge is ( + - 0.1) to the dyno used with a new 02 sensor; However, when comparing the PLX gauge with the G4+ guage, the G4+ is about (+ 0.3 to 0.4 higher). To be clear, when the PLX gauge shows 14.3 AFR  the G4+ says 14.6 to 14.7, generally. I would conclude that the engine is running a little rich if it is following the AFR target table. Your thoughts and solutions on this would be appreciated. I look forward to your reply. Best regards, David