02 Voltage

[Shane8772]

My Spark plugs are white ash..... Chemically correct (14.7 A/F Ratio) is Tan carbon....
How do I correct this?
Change the 02 sensor voltage map?
HP Tuner says this :
' [ECM] 12530 - O2 Sensor B1 R/L vs. Airflow Mode: These tables define the Rich/Lean switching voltages for the O2 sensor in relation to Airflow Mode. '

Air Flow Mode 0 480.907732028808
Air Flow Mode 2 480.907732028808
Air Flow Mode 4 480.907732028808
Air Flow Mode 6 480.907732028808
Air Flow Mode 8 480.907732028808
Air Flow Mode 10 490.895502106264
Air Flow Mode 12 525.95461339856
Air Flow Mode 14 525.95461339856
Air Flow Mode 16 525.95461339856

Leaner is less Voltage....
So.... I do a little more Voltage... To go a little Richer.

Or what do I do?

2001 GMC Sierra 2500HD 6.0 L Vortec Gasoline 4L80E 3.78 Rear End.

Thanks....

[5FDP]

If it's all stock, you should change nothing and look for an actual problem.

If it's modded and the plugs look bad, then something in the tune is off.

You didn't give much information on that part of it though.