I've read that with today's unleaded fuels with the ethanol, and now that bikes have efi, that you can't get a plug reading anymore. They all look pretty white because the fuel burns cleaner. True? I've seen plugs from bikes that have Power Commanders, Serts, etc. on them and they look pretty white too. Reason I ask is because I had a PC on my last bike, and I see no difference in plug color compared to my current bike. I asked my "indy" about that, and he told me the same thing. Quote------> "Today's fuels make it very hard to tell how rich or lean your bike is by looking at the plugs. Not like it used to be with carbs and the older gasolines. Unless you're running really rich, they all look the same." <------ End Quote...... I've also seen that posted different places on the internet (so you know it has to be true! LOL). I still have some plugs thrown in my toolbox from my old carbed EVO. Nice and tan color. EFI has a lot of advantages, but sometimes I think carbs were better.