Join Date: Mar 2011
Location: Ottawa ON Canada
Post update, mine definitely shifts at higher points than it did. I assume that's why is using more gas in city driving. I can't see how it should affect gas mileage on the highway, though, since the tach is reading the same at 120kph now as it did before the update. If you are not having any issues, I'd stick with what you have, but I don't know if that raises any warranty issues. My dealer didn't ask. He did the update when I had the car in for routine servicing.