white 02's, normal color?
 

Looked at my 02's the other day and there all white. The reason for checking them is the cars poor mpg, gets sluggish after warmup. I cleaned them with some electrical parts cleaner. Didn't do anything for cleaning them. Might try the propane torch though. Are my 02's fine being white? Thanks.

it seems to me that the exhaust gases hitting them are very lean, hows your plugs colour?

Plug color when I changed them a few months ago was fine , light grey On the dyno the A/F was 12 at peak hp and was reading 14.7 at part throttle like it should. The dyno was just a couple months ago. I will check the newer plugs today.

if your plugs are good then you maybe be alright.Come to think of it when I had the stock exhaust on the O2's where tan colour.Should be good.

One weird thing is I had to take my car into the dealer today so I put the stock tune back in along with stock lid, took maft off and then watched my gas gauge dropped very fast. I went on a long trip and my gas gauge only dropped 1/2 in 229 miles but after I put the car back to stock the gauge dropped almost 1/2 in 60 miles. I used contact cleaner on the 02's the day before the trip and got great mileage. I am stll thinking ther 02's are wacky.

I am not saying this is your issue but just a FYI, To clean your O2 sensors don't use any type of chemicals, the cleaning should be done by using a PROPANE TORCH, place the sensor tip inside the propane flame for a few seconds at a time until all contaminants get evaporated by the heat.