PICCO P9 EVO 2
#78
#80
You turn the needles until it is tuned correctly! There is no such thing as optimal settings, if you are referring to counting turns. If you even know how many turns out your needles are, you don't know anything about engine tuning. Differences in fuel, plugs, atmospheric density, temperature, humidity, etc. will require far different needle positions to arrive at the same state of tune.
#87



