Spark Plug wire size

Discussion in 'Touring Models' started by 99RK Rider, Apr 18, 2011.

  1. 99RK Rider

    99RK Rider New Member

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    I am planning on changing my plug wires on my 99 Road King. It has the stage 2 SE kit. Was just wondering if a wire upgrade to 10.4mm wires over 8mm is worth the extra $ or not.:newsmile093:

    Since the change of gas to 15% ethanol here, mileage (EDIT):mgun:

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  2. Hoople

    Hoople Account Removed

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    As for an electrical advantage, I just don't see one. Since the wires are so short and they are not in contact with any surrounding metal, I really see no electrical advantage for going with them.
    Now if you were running a MSD ignition and you had 40KV of available voltage, that would be a different story.

    Now cosmetics are something else.:)
     
  3. SoonerSoftail

    SoonerSoftail Active Member

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    You won't see a bit of difference. If the wires were 50 feet long, maybe but doubtful even then. As short as motorcycle wires are absolutely not.
     
  4. Jack Klarich

    Jack Klarich Expert Member

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    Save your money and stick with stock. I got a set of the new screaming eagle wires as a gift and see no change in the way my bike runs from stock wires:s
     
  5. Hoople

    Hoople Account Removed

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    Even if they don't work, it sure beats the pair of brown socks I got.!:)
     
  6. Jack Klarich

    Jack Klarich Expert Member

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    LOL want to trade?:s
     
  7. glider

    glider Veteran Member

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    Stock plugs and stock wires, hard to beat that combo. ION sensing could be affected if you change either.
     
  8. Big Dan

    Big Dan Member

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    There's no ion sensing on a '99, so you're not limited to stock stuff. You can pretty much run what you want. I like NGK plugs, as a holdover from my dirt-bike days, and usually run SE wires on my '99 Ultra.
     
  9. glider

    glider Veteran Member

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    The ION sensing is a Delphi system feature but I still would use stock plugs and wires.
     
  10. Iceman24

    Iceman24 Well-Known Member

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    Your money, buy what you want. Agree w/other posts...unless you're drag racing, stock wires are fine. Can go w/8.Xmm if you want something better than stock...anything more is overkill.