Originally Posted by saabarupp
It could be that a side effect of the "diagnostic" was to reset the ecu. This clears learned parameters and allows the car to relearn with a clean slate. It could be that reseting allowed the ecu to begin relearning in conditions it was more likely to face on a daily basis rather than what ever conditions it was subjected to out of the factory. Anyone can reset the ecu simply by disconnecting the battery. Please note: radio presets will also be cleared.
That's interesting. My car had 2 miles on the odometer when we picked it up.
It must have had a very odd and traumatic "birth" on the treadmill at the factory.:-)
Based on your comment, I wonder if it would be worthwhile for ALL owners to reset the ECU (disconnect the battery) after coddling the car for the 1000 mile break in period, so it can learn our REAL style of driving?
Just a thought.