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  1. #1

    deso iridum racing

    has anybody tryed the denso iridium racing plugs? i cros-referenced the cr9eix on sparkplugs.com and it came up with these...
    http://sparkplugs.com/results_cross....sManID=15&mfid=
    they are 35$ apice!!! anybody have experience with them? stock plugs on mine gone at 32 hours and need a new set...


  2. #2
    Moderator
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    NitroShark's Avatar
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    yea i use them.

    read what i posted here about sparkplugs.

    http://greenhulk.net/forums/showthre...ighlight=plugs

    Shawn

  3. #3
    jtskir15f's Avatar
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    i use the cr9eix from NGK. like the plugs a lot, reliable, starts easy, burns good.

  4. #4
    Been around for years...seen it all Kawi-Guy's Avatar
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    I'm also using them now, less expensive and better resistance to heat

  5. #5
    Hooah_Killer's Avatar
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    So the best plug to use in a slightly modified 07 250x (intake, bypass, exhaust, timing). Fuel is 91-93 octane (91 is boosted with toluene).

    a. stock kawi
    b. nkg iridium
    c. denso racing iridium

  6. #6
    see thats what i was curious about i just hapened to cross the ngk and it came up with these i have a stock ski so i dont need them but i was wondering if anybody uses them in a ultra 250 and how they last. i cant afford them personally so i got the ngk iridiums and if i have to change them every 25 hours owell they are cheap.

  7. #7
    Moderator
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    For a stock or lightly modified ski the NGK iridium will work fine. No need for a heat range change or a Denso Race plug.

    Shawn

  8. #8
    So with the NGK iridium's, do they have to be replaced often or not? How long do they last from the people who have them?

  9. #9
    Been around for years...seen it all Kawi-Guy's Avatar
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    I've had them in for 25 hours or so, they work fine so far and are available at any auto parts store, might take a day for them to get 'em in stock though.

  10. #10
    Hooah_Killer's Avatar
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    Quote Originally Posted by NitroShark View Post
    For a stock or lightly modified ski the NGK iridium will work fine. No need for a heat range change or a Denso Race plug.

    Shawn
    and your preference between the ngk iridium vs the denso (non racing) iridium i believe their number is IU27

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