Just got an 01 Raptor and love it! A little more fun than my Kodiak. Today I rode a few hours to get the feel of it and everything worked great. I put it in my truck and drove home, when I got home after about an hour I decided to go for another rip. Well, its about 38 degrees and the motor took a while to warm up as usuall. But I now have a slight bog that never went away at about 1/8 to 1/4 throttle. It runs great at top end mid range and idle. Is this normal for cold weather with the Raptor? Oh it never backfired or did anything like that it just has a slight bog. Its really annoying when shifting!