I've searched and searched and cant find anything. My plugs are really white and I've had some people tell me its because the car is running lean and some people say its from the Car burning coolant. I had the PCM tuned from PCM4LESS. Do you think its the tune, or could it possibly be the O2 sensors. Or do I need to regap the plugs, (i dont know what they are gapped at right now). I have a FI system??

 

Probably no big deal. If you are worried about being lean, get a dyno tune or check it out with a wideband. Typically, you want the light tan color, but I've seen them white in a good running car depending on the fuel beiing used.

 

White could also indicate too hot a spark plug. You could drop one heat range.