One month since my IC update was installed. I cannot report any problems since, so it must do some good, as I was getting an almost daily stumble to some degree on starts previous to the update.
Well I had my car in for service at the dealer yesterday, and in spite of having the "Quebec kit" (as they call the IC kit at my dealer), the IC hose was FULL OF ICE!!! It had been really cold the few days leading up to the service visit, and I again complained of rough starts.
So if you ask me, the kit seems like a band-aid on the right arm for an injury on the left arm: it does diddly squat.
And their cure is a joke: they removed the air intake duct between the air intake and the filter, just like the band-aid cure they recommended while folks were waiting for their kit. Moreover, the service note said that this was done on VW recommendation,
to prevent water from getting into the intake.
VW themselves seem completely oblivious to the fact that:
1) hydrocarbon combustion produces water vapour;
2) the water vapour will be present in the exhaust;
3) if you recycle a part of the exhaust gasses into the intake, you're injecting water vapour;
4) if you cool air flow, that water vapour will condense out, especially if there's a pressure drop;
5) condensed water vapour will freeze if it's below freezing, and may pool otherwise under the right conditions;
6) the frozen water from the recycled exhaust will thaw if the car is parked in a warm garage;
7) the melted water or pooled water will get sucked into the engine while trying to start, or under wide-open throttle.
In other words, VW Canada technicians haven't a clue how a diesel engine processes its fuel, and have even less of a clue about how their emissions system works