Pipes turning purple, bluish color

I have a 2013 Street Glide with Rush slip-ons 2.5 diameter, high flow air filter. I remapped the computer using a dynajet down load, pipes immediately began to turn color, in less than a hundred miles.
The reason I'm curious about this is that my last bike I had Vance and Hines fuel pak and pipes and did not have this much discoloration with 38,000 miles on the pipes.
My question is this normal or is there something else I need to address?

What pipe is it on? I would say that you have an extremely lean bike if they are turning purple. Did you do any dyno work (tuning) when the down load was flashed? Most likely is a wrong MAP.. JMO. There will be other replies that will be able to narrow it down for you..

Welcome to Bike-Talk.

Yep, like he said, V&H pipes are double wall and normally will not blue. Check with yer pipe manufacturer and see what they say. May be normal.

It is not the mufflers(slip ons) that are turning color but the header pipes, near the exhaust ports and basically all the way down to the muffler

Pipes turn blue at the head pipes from being rich during warm up. Example using the enrichner on a carb is a good example. I put a new set if pipes on for my youngest daughters senior picture. I always sat on the bike and pushed the enricher in right away using the throttle lock to keep it idled up. For some reason this time I got a brain fart and got off the bike, walked over and shut my shed door, then watched my pipes turn from a golden brown to blue!!!! I shut it down, let it cool then used blue away on them. I went back to my normal warm up habits and turned them a nice golden brown again.

I would suspect FI would act the same way at warm up. The fuel management system would be rich at warm ups and turn the pipes blue. If you turn your pipes blue at the mufflers your to rich at cruising.

In both cases the heat from the heads are burning the excess fuel at the head pipe cresting the heat that turns the pipes blue. So I've seen with my own eyes and also have been told,,A heat shield will hold heat in doing the same thing.

Funny you brought that up. I did the stage 1 on my bike with a set of drag pipes. It ran so lean it coughed at road speeds, my top end was 75!!! Those pipes never turned any color, stayed chrome. I read the carb tuning on nightrider.com and what a dif. My pipes turned blue around 2" from the head. I used to leave my enrichner in a tad to long. I went to sturgis that year and cruised 85-90 on the way home. It was hot as he//! Yup, blue around 10" down now!! That's why the new pipes for the pictures. On the way up I road the speed limit. When I got there they looked like they did before I left. I know I wasn't lean, I had a 205 main jet in. Those drag pipes loved the fuel. But that extra fuel running through the pipes at that great of speed with the heat turned them blue farther down.

To lean, boy it would have to be leaner then mine was and it caughed terrible at highway speeds. I suppose,,,, but it wasn't what I experienced. my nephews 883 stock, could keep up with me. My throttle from half to full felt the same, 4th gear passed no better then 5th and I have a 65 tooth rear pully!!

I guess in my experience in my original post I should have said, check your plugs,, to lean I'd be surprised from what I had going on. Plus what I was told, to much fuel at warm up burning in the head pipe, turns them blue. To big of main jet for me, farther down the pipe and at the muffler. That is why I started using my throttle lock pushing the enricher in right away!!! Gold, no more blue. Just my experience ;^)

Sounds entirely logical to me..........

Me, too! But I guess I'll never find out because I'm not gonna wind out this ol' hard tail that fast! My pipes are a light gold color about 6" or so down from the top. Normal, I think. Pipes will discolor some no matter how you tune the thang.

Thanks for all the feed back, definitely gives me something to chew on. I called the guys at fuel moto they say it is normal(but what else would they say"Our product sucks glad you brought it to our attention"). I guess I can have it put on a Dyno and that should clear up the guess work.

I gave my pipes to a friend. I went with cycle shack m pipes. His set up, EV 27 wisco 10:1 my carb mod same jets as me. I told him not to run the enrichner anylonger then it takes to get the throttle lock on. What's the first thing he did after install, walked away from the bike enrichner on he turned them blue in time.

I use the enricher on my CV carb when first starting up in the morning, but only leave it out for 10 maybe 15 seconds, gradually pushing it in, then a few revs and let it idle a minute or two. It has taken a lot of trial and error to get the routine down. But I'm sure it's different for different bikes . . .

But whatever bike, you definitely don't want the enricher out too long - fouls the plugs and blues the pipes, at least in my case.

BTW, my pipes are Paughco 38" drags with 3 1/2" baffles.

Painted my head pipes black...No bluing since....:roflmao:

Flat header paint,with chrome heat shields

I do the same thing, but I do find that I have to use the choke more often on hot start ups.