Question about mufflers

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Aug 31, 2009 | 09:06 AM

morrishuckeba

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From: I live in Ruidoso New Mexico

Question about mufflers

I had my 2007 Ultra dyno and new mufflers installed. In no time after the dyno my right muffler turned yellow. What caused it to turn? To lean or to rich.

Aug 31, 2009 | 09:18 AM

smokindave

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From: Oh

Too lean, never heard of running rich turning pipes yellow. Check your plugs and see if they are white or tan color, should be a light tan. Also, what mufflers, some have had problems.

Aug 31, 2009 | 09:33 AM

TennesseeJed

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From: North of the Laurention Divide, MN

neighbor's dog coming by to pay respects??

Aug 31, 2009 | 09:36 AM

morrishuckeba

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From: I live in Ruidoso New Mexico

I have Rinehart Eagle Beak as in my photo you can see the yellow on my muffler. I was wondering if the duno did this. I had Supper Trap before with no problem.

Aug 31, 2009 | 12:42 PM

lowflyer

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From: Delafield,Wi. 53188

I`d say it`s lean also. Another point is the glass packing isn`t there. I`m running w/power commander and auto tune and have the packing removed but no yellow on muffler. When I took out the glass packing I knew I was leaving myself vulnereable.