Its about 0 degrees here now and boy does the Marauder like it. I read somewhere that 10 degrees cooler of ambient is worth roughly 1% more horsepower. So if my car was making 250 in Sept and its 70 degrees colder, that's 7 X 2.5hp = 17.5 extra to play with. Add in the decreased grip from harder tires, lots of salt & crap on the roads, and I am having lots of fun at every stop sign today!