ORIGINAL: CEN Racing
-2 degree is way too extreme.
..... Uh oh... It's colder than -2 C about 6-7 months of the year here lol.
I have had my MT2 running in -35 temps this winter. It it true that for any temp variance you do need to retune though, but the trick is to get a balance of temp and mixture. Since you are richening it up you're temps will fall, plus the ambiant temps decrease your engine temps, so when its real cold its best to cover any holes you have in the body of your RC to prevent airflow.
Of course everytime you drive throuh more than 2 inches of snow your engine cools down alot. Can't be good for it. Gues i better get working on a snow/rain shield for the engine.