Quote:

I guess my worry is being new and just learning is going to big and washing down the cylinders. When you say MPH I take it you mean Mil per hour and not some other abbreviation. I don't have a weather station but Sunday here was very Humid and HOT how much of a role does this play in jet size?



Yes... MPH = mile per hour... temp and humidity have
a factor but jet it for the fastest MPH on the day your
testing... I will jet up or down 1 jet size for every
25* (if I feel like it to keep it optimized)... 1
jet size wont burn a piston if you were on before