Originally Posted by redline9001
I have a 2011 and my car was at the dealer two weeks ago for a oil change and my car got flashed with a mandatory update, i had no issues what so ever before the flash.
It would be interesting to have this verified by a couple of other cars before everyone storms off to the dealer demanding the latest software...
Just a bit of anecdotal evidence but Tom immediately suggested this as the "problem" and said he had seen this before. In fact, he showed me the plots for a car that made 308 WHP (stock) with old plugs and software. It was misfiring and had failed smog (not codes though). The updated software made a huge difference (I wanna say it made 345 after updating the software but don't quote me on that).