1993_banshee Posted May 28, 2016 Report Share Posted May 28, 2016 (Fmf gnarly headers and powercore 2 silencers no airbox with clamp ons stock bore to my knowledge),I currently have a 300 main 30 pilot 3rd or fourth clip down (have slides out now) I live in northeast south dakota not sure of elavation. My plugs are pretty black since it's warmed up and it doesn't feel like I'm getting full potential out of it. What I want to know is would I start with the needle the mains or the pilots?plug chop? Also I did jets when it was like 65 degrees. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted May 29, 2016 Report Share Posted May 29, 2016 Try 30 pilot, 280 main, start with the needle in the middle then fine tune it. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted May 29, 2016 Report Share Posted May 29, 2016 If it feels like it's blubbering off idle, try a 27.5 pilot. Quote Link to comment Share on other sites More sharing options...
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