Quote:
Originally Posted by davesrave
After more than a thousand miles, my mileage is down maybe .5 MPG. I did get a map update out of it, though nothing was ever mentioned about this. Wonder if other things were done such as an ECU update?
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.5? That is well within the difference expected with cold weather. There is nothing wrong with your car. You don't need to change to tune. It isn't beyond what would be expected and will go back to "normal" when it warms up outside.