I've read a lot on this mod, and I wish to never have it performed. Lost of very similar posts tho with people who have had it done regarding fuel mileage.
I have noticed that the car, 06 pd dsg, starts much nicer in a semi heated garage at 40-50 deg. F. than outside in the 20's, but it is still smooth running, just louder and COLDER. brrrrrr.
I have no idea if they fixed the 06's with the TSB of prior years, of if they are saved for the colder Canadian climates. Either way, car starts fine and I have no problems so far. temps only as low as the high teens so far.
I just don't like the idea of mechanics possibly only trained to wash cars monkey'ing around with the heart of my car.
I'll build a larger garage first, or just kick the wife's car to the curb
I honestly think that half of the problems people face in cold climates are poor fuel sources, and poorly treated fuel for cold weather performance. Gelling, low centane, etc.
Diesels like a certain fuel spec when it gets colder, and they are much pickier about these specks when extreemly cold, then say at freezing.