Turning it out definatly leans it out. Just remove the screw and you can see it's a tapered needle, so it's obvious. Anything more than about 4 turns and you need to go to a bigger pilot. But the only question i have is why is it that most people, even those with freaks or max airbox mods find the stock pilots as rich as they need to go when the mains and needles always need to go higher with such mods? Seems odd, and even i tried but found the stockers were plently rich enough with my uni, snorkel removal and drilled bottom. Mains are at 130 and TBS needles with one shim, yet stock pilots are rich enough.........wierd.