Captain_Midnight
Adjunct
Reged: 02/07/09
Posts: 234
Loc: Seattle, WA
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I wrapped my headers last month and now I've noticed that once the bike is fully warmed up the idle speed jumps around. I'm guessing that means I need to adjust my A/F ratio. Does that sound like I need more air or more fuel?
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B02S4
Learned Hand
Reged: 02/28/08
Posts: 1569
Loc: USA
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Yes.
Seriously, how about a few more details?
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steve0suprem0
Adjunct
Reged: 09/24/10
Posts: 298
Loc: Central Coast, CA
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i can't imagine that having anything to do with the wrap. what else have you done?
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edmspeedmaster
Learned Hand
Reged: 07/11/11
Posts: 1286
Loc: Alberta, Canada
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wrap not a great idea if your pipes are nice, if not then i guess its an option. Can change the tune, allot more scavenging going on and could lien out the engine. As mentioned though more info, headers wrpped, pipe, both? any other mods, filters, re-jetted? When you say bounce around, 100rpm 500 rpm? does it do this when you are only in idle or while riding? I am surely not the pro in here but those that are will want to know in order to better help you. PS.....i have seen header pipe turn nice pipes into mush in less then 18 months....... just saying :-)
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2007 Speedmaster and lovin it!
In Memory of "Friar John" 1967-2012 RIP
Edited by edmspeedmaster (05/29/12 02:36 PM)
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Captain_Midnight
Adjunct
Reged: 02/07/09
Posts: 234
Loc: Seattle, WA
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Well the wrap's already on. The pipes were scratched up and blued and I wanted to black them out so I wrapped them. Just the headers. I did no other mods. The bike acts exactly as it did pre wrap except the idle fluctuates by about 250 rpms. This is the first I've ever heard of header wrap destroying pipes. I have the same header wrap on my 79 Ironhead and it's been on there for 10+ years with no issues. The idle will drop by about 250 rpms then cycle back up, but only when the bike is hot.
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Zmilin
Saddle Sore
Reged: 03/02/07
Posts: 5131
Loc: Sammamish, Washington - USA
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Did it start doing that immediately after you wrapped them or was it a few days later?
Im thinking coincidence unless you were yanking on the header pipes with force and maybe broke the seal at the exhaust port but then that would make it louder and probably show soot where the leak is.
Your not running an air box right? Just K&Ns.
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07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq
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steve0suprem0
Adjunct
Reged: 09/24/10
Posts: 298
Loc: Central Coast, CA
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High five on the iron head. From what I undestand, wrap only rusts pipes if they get wet without the chance to boil the moisture out. God knows what those iron head's pipes look like. Anyway, I think big Z is right: it sounds like you probably have a leak.
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duck
Adjunct
Reged: 07/22/05
Posts: 273
Loc: Melbourne, Australia
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I have had wrap on my headers for a couple of years now and have had no problems with it all
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Duck
Road Rabble MHi
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SDKimo
Adjunct
Reged: 07/02/06
Posts: 726
Loc: Huntington Beach, CA
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Now that you posted this, my idle jumps around (I have wrapped pipes)...guess I never noticed it...
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mikemm03
Loquacious
Reged: 01/13/05
Posts: 3795
Loc: Tennessee
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Keep talkin it up gentlemen, my idle jumps around as well and I do not have header wrap 
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Red Devil and Hornet
It's not speeding till you get pulled over.
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