IN NC its much warmer. SOmetimes it gets in the teens. When it gets down around 10-12* I let it run constant. It'll be slow out the top arch. The top couple of holes on the lower arch will weep slower as well. I have to turn the underbody down cause it flows a ton. I guess because its lower and less nozzles. I try to keep the flow to a minimum using cycled weep all i can