O2 Sensors? Please Help!!

[PKRWUD]

It's entirely possible that your pinging problem is related to the gasoline you're using. Many gasoline companies change their gas between winter and summer, with the winter gas being more likely to cause a detonation problem. You could try adding an octane booster to see if that solves it, but retarding the base timing a degree or two would be cheaper.

You do use super unleaded, don't you? (it's mandatory with a SuperChip)

Other than that, the O2 sensors are probably due for replacement anyway. Especially if they're original equipment!

Take care,
-Chris