Sorry for bringing up a dead post, but the OP of this thread has the same issue I have been having. I have an 01 7.3 Powerstroke, roughly 200K on the clock, and in temperatures around 50 degrees and below on initial start up for the day I get a nice amount of smoke coming from my exhaust I would describe as grey/white/blue mixed, and smells bad (unburnt fuel?). I have an Edge Evolution CTS tuner, and have noticed that once the oil temp reaches 65 degrees the smoke is gone. I have a GPR LED mod, so I can tell that my relay is at least working (not sure whether its sending full amperage or not?) the truck starts pretty easily but runs a little rough until about 3 1/2 minutes of idling. I have no coolant loss, and lose a little bit of oil which I would blame on a dipstick O-Ring leak. Truck doesn't run poorly, or miss once it is warm. It also doesn't matter which tune I am running on the Evo.
Any opinions or thoughts?