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  1. Z

    arctic cat 440 air cooled

    Well the proper way to tune a carb sled is to start at the idle and work you way to WOT. But being it runs good and all you changed is the air box I would jet up 2 sizes (main Jet) and see what the plugs look like. If it has a low end bog turn the air screw inwards to richen it up. If that does...
  2. Z

    New to this site!!

    HI guys, I am new to this site. I found it yesterday doing a search for A/F ratios on Google and never new this site existed until yesterday. So I looked around the site and it seems there is a bunch of you that like to do the same things as I do and thought we can probable help each other out...
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