Jwcole

I run mine with the 7mm Venturi and a #5 plug most of the time. I use 30% fuel from either bones or byrons and I get consistent 12 minute tanks out of my buggy. In race trim with the race trigger finger I pit at 10 to 10:30 with fuel to spare. There's no magic science behind what you have to do as a user. These engines just perform that well. If it's not getting the mileage then it's more than likely not running at peak performance yet. Lean that puppy!! If there's smoke and good power it's fine! Power will suffer as smoke diminishes when getting too lean and it will begin to sound flat right before you start getting to the danger zone........these things are incredible little mills! Also there is a plethora of knowledge here on this forum and we are all willing to help! Good luck and happy racing!!