Free mods but no jetting ?

[OhioRich]

I have a 03 WR450 and live in Ohio. I've taken out the plug in the pipe, cut the throttle stop, and removed the snorkel for the air box. I haven't re-jetted but it's running great! My question is am I hurting anything by not re-jetting ? And if I do re-jet will it be worth all the hassle. I just like to ride and have little time to tinker with the bike. I don’t want to be down a week trying to get running right. By the way thanks to everyone for all the help so far

[Indy_WR450]

You should be OK with stock jetting down to about 40 degrees. Colder and you will be too lean. ?