Hi everyone,

I am putting a Yoshi full system on my 440 CT Racing engine @ 11:1 running stock carb with no lid on the air box. The paper work that came with the pipe calls for a 178 jet... that seems to like to big of a jet. I thought about start out at 165 main with a 42 pilot. But now I am having second thoughts about that because of what Yoshi specs? Does anyone have a similar setup?

 

yeah, that is too big in my opinion. i would start around a 170 and work your way down to where you feel it is right.