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Thread: cdi boxes?

  1. #1

    cdi boxes?

    I am looking to replace mine on my 99 ultra. I currently use the high $ plugs. I have located a 99 CDI box that uses the cheaper plugs. If I do the swap will the maping or spark be lessed or the rpms be lower with the diffrent plugs and cdi box....


  2. #2
    so far my reserch said that the early 99 witch I have has a hoter ignition maping than the later 99s and the 2000s and that if I swap to a 2000 cdi or a later 99 there will be little bit of a proformance becrease. Is this true? I also found that if you run a aftermarket head that puts the spark plug in the center of the head you can loss the R6918c-9 plugs if you want but they recamad them on any highly moded ultra cause they are more derable.

  3. #3
    dealer is saying I can put a new igniter in and that will solve my problem.. for $442.06

  4. #4
    low and behold they are on back order till they dont know when... any one got one for sale? i am not going to get to ride this summer with out it...

  5. #5
    Let me out of here......I need to go on Greenhulk!
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    always see em on ebay.

    Quote Originally Posted by doogie View Post
    low and behold they are on back order till they dont know when... any one got one for sale? i am not going to get to ride this summer with out it...

  6. #6
    steve45's Avatar
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    What is your hull number?

  7. #7
    Quote Originally Posted by steve45 View Post
    What is your hull number?
    Kav??5819f999

  8. #8
    the question marks are cause the tag is damaged and i cant read them

  9. #9
    steve45's Avatar
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    Number 41804 and above came with the newer ignition box. You can also find the HIN under the battery.

  10. #10
    cconigliaro's Avatar
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    So kaw42091d999 would be the newer style with cheaper plugs? That's the ski that CDI box came off of I told you about. Just verifying the plug type.

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