I'm in virginia,35 MPH is the legal top speed limit for moped class scooters.That's why top end isn't really my goal.I run faster than I should,but don't try to press my luck either.I have a good feeling i'm running a 92 jet now.I pulled the plug the other day and so far it looks fine,After I get the new plug/s I'm going to do it again,but if I don't get and airbox I'm sure i'll be fine with the current jetting.I would like a better flowing filter though.Anyone make a better factory replacement?