I am with the Canadain Safety Council's motorcycle program and we have 6 of the titan 150's that came into Canada from Brazil for the course accross Canada. I have been told that the bikes are jetted too lean for our climate and would like to know what size jets we should be using.

You jet for altitude.. I don't know of these bikes but id start one size up on main jet & also one up on idle jet if this carb is so equipped ..if carb has needle see if you can raise it to next level also if it has a clip & grove arrangement..lok for a nice tan color on plug isolator tip after some run time .. & also how the bike feels ..