Big Horn 06

6 months ago I had a set of F1 Flux 1 injectors put in my truck. Runs great but lately, the weather started getting cool enough to sometimes make the grid heater turn on in the morning. What happens when it doesn't, the truck starts to idle rough and throw out some whitish smoke and smells of cold diesel. Idle it up for a few seconds and goes away. When the heater comes on, it idles fine. Otherwise it runs strong awesome. Stock program and I just had it serviced a few weeks ago and all filters replaced. Ran some Meaner Power Cleaner through it and no change. Suggestions?