My thunderheader has turned dark blue purple all the way from the heads to where it goes to into one then yellowing almost to the rear of my bags!Heatshields are hiding all of this but isnt this a sign if exsessive heat?How the hell can I tell if shes running hot? Runs well ...only have a super sucker thunderheader and cobra fi 2000 tuner not the auto?Any help would be greatly appreciated..

 

If its any help front plug is greyish brown rear plug is bone white looks chaulky..

 

Bone white is too lean which is too hot. A nice beige or sand color is good. You can buy a heat gun that will tell you the engine temp & you can get an idea off your oil temp if you have a dip stick with the gauge. If you don't, but a thermometer for checking meat temps at your local grocery store. good tool to have! bit more tweekin' on your fuel delivery will get you dialed in!
Hatch.

 

Whats temp range should the engine be running?

 

Sounds lean to me. Did you put the header on an otherwise stock bike? AC, exhaust and no tune to fatten the AF ratio will do that.

 

I always tune off the plugs. just a nice tan color is were you want to be, any lighter is way too lean

 

No its got a cobra fuel pack set to there settings...Im gonna add fuel to the mid and high range then take a look back at the plugs..Is there any long term damage I could be doing?

 

I agree, don't worry so much about the pipes, go on the color of the plugs. Exhaust gases are incredibly hot, at nite they'll look like they'll melt the pipes off.