When I am real time tuning I can get my AFR's in line with the gauge and software. Once I copy over the information from the scanner to the editor it does not come even close. What's up with that?

Also, is there a difference in the percentages from the scanner to the editor? It seems like it's mostly a guess work. If I take the AFR error pid's info and put it in the editor's box and hit multiply % it will give me a different number than if I copy the information and right click and use multiply %. What's up with that?