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Message: <blockquote data-quote="Richouse" data-source="post: 997686" data-attributes="member: 9392"><p>As stated before, pipes blue because of high temps.  Usually caused by a lean mixture which stock FJR's are notorious for.  My header is discolored all the way to the pipe that goes into the 2 Bro's can and it has less that 8000 miles on it.  No, it didn't blue "Just" because you ran in 100* weather with 430lbs. on it.  If you don't want to get a power commander you can do a barbarian jumper mod and enrich the fuel mixture which might help some but won't stop it more than likely.  the bike will run a little better though.</p></blockquote><p></p>