Originally Posted by Bode Klammer
I think the reflashed cars will be unacceptable in some way, less power, maybe less mileage or maybe just noisier. Why else would they take the risk of doing something like that?
I agree - my thought is that the engineering to marketing intent was around refinement (diesel's big problem), which is why I wonder if this isn't more than cheat the dyno, leaving it wide open any time it doesn't detect "test mode".
Ostensibly, the system could be designed to more or less stay within parameters in normal around town driving, but to open up in more of a highway cruising mode where diesels struggle in refinement compared to their peers. You still need "dyno detect" mode in this scenario in the event of "cruising" it on the dyno.
Now that's speculation entirely, but 4 cyl are the hardest engines to refine, so it does to me tie into the "why" unless it is purely a margin game, except the emissions system is there, so this is costing money to implement. Make diesels feel more like gas engines to penetrate the U.S. market, play tricks with emissions controls to get around testing standards to achieve the goal.
If this is at least in part true, owners may be particularly unhappy with a loss of refinement cruising on long trips at 75 mph, since that was one of the biggest perception hurdles to overcome in the first place. The other stuff may be unacceptable, but still what the sticker says you bought.
I's definitely buy one if values plummet (and my family would fit inside) - that takes the premium out of the market without killing the value proposition of reliability, high economy, and the diesel power curve. Hell, you might be able to drive one for 3-4 years and sell it at purchase price once the short memory has faded.