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Thread: Hate to but Jetting Again

  1. #1
    Join Date
    Oct 2008
    Posts
    6

    Default Hate to but Jetting Again

    Can anyone give me some light, on the basic jet and needle settings for my 08 SM. I have ordered the MRD exhaust and the JD jet Kit came today, I will also finish the air box mod and a KN filter. I am in central OH at around 1100ft. Also, what was the link for the instructions for the air box mod.

  2. #2
    Join Date
    Oct 2007
    Location
    Oceanside, Ca.
    Posts
    113

    Default

    '07 YZ250f White
    '06 DRZ400s White- 90/10 Dirt/Street
    '09 DRZ400sm White- 90/10 Street/Dirt
    In a perfect world ALL Golf Courses would be MX/ SuMo tracks, and Freeways would have a special lane designated for 2 wheels only.... no speed limit !

  3. #3
    Join Date
    Jul 2008
    Location
    Fontana, CA
    Posts
    135

    Default

    160 main
    25 pilot with stock fuel screw, factory 22.5 pilot with Keintech extended fuel screw
    Blue needle with clip in 4th slot from top
    2.5-2.75 turns on the fuel screw.
    Pauly

    2006 DR-Z400S

  4. #4
    Join Date
    Oct 2008
    Posts
    6

    Default

    That is with the MRD std exhaust right?

  5. #5
    Join Date
    Jul 2008
    Location
    Fontana, CA
    Posts
    135

    Default

    Yeah, as long as its not corked (quiet insert or spark arrestor).
    Pauly

    2006 DR-Z400S

  6. #6
    Join Date
    Oct 2008
    Posts
    6

    Default

    Quiet insert I am afraid, at least for now!

  7. #7
    Join Date
    Jul 2008
    Location
    Fontana, CA
    Posts
    135

    Default

    Then go with the 155 main jet.
    Pauly

    2006 DR-Z400S

  8. #8
    Join Date
    Oct 2008
    Posts
    6

    Default

    Thanks a million

  9. #9
    Join Date
    Jul 2008
    Location
    Fontana, CA
    Posts
    135

    Default

    Yeah, no problem.
    Pauly

    2006 DR-Z400S

  10. #10
    Join Date
    Oct 2008
    Posts
    6

    Default

    should I not have the q insert installed? HP + I bet, but how much and what is the noise increase.

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