EHS airbox lid

What do you have now

Stock lid you will for sure, If you have no lid now or a vented lid you still need to check it but may not need to re jet.
 
You could possibly get away without rejetting .. it would make me uneasy riding it though.. if you get it i strongly encourage you to rejet... it seems hard but it takes all of 5 minutes.
if you get it and decide to rejet 240 main will be the size jet to get
 
lol no sh*t canada is cold and higher in elevation that most U.S states

colder in general yes, but i would prolly be able to argue the point that in general is lower in elevation. we have the rocky mountains and an old stretch of the appalacian mountains, u guys have the rockies, the appalacians, as well as some of the sierra nevada mountains, just a thought though