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  1. #1
    thesepaperwings's Avatar
    Join Date
    May 2007
    South East Kansas

    What plugs are you using in your Ultra 150 or STX-R?

    Just wondering what everyone is using. If you have a stg 1 kit then you can use BR8es or BR9es. Anyone tried both? Any adverse effects?

  2. #2
    btldigger's Avatar
    Join Date
    Feb 2007
    lebanon tn.
    I had alot of problems fouling br9's so I have run br8's since last year with no trouble. If I have to idle alot it still will foul one occasionally. I could see it being a problem if you were running lean.

  3. #3
    Fat Man, Little Boat Region8Ultra250X's Avatar
    Join Date
    Jun 2007
    if you are running the ultra with the oddball ECU, you are stuck with that one plug...... but as far as a stage I goes, BR8ES... i ran that in my modded stock class stxr with no problems

  4. #4

    Join Date
    Dec 2006
    In 2 Ultra 150's, one a modified 99 BR8's and the 02 Ultra modified and STXR stock BR9's with no problem.

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