Just had the 6k service on my 2015 GT, dealer told me they had done an update on the software and started to explain what it was about, after 5 mins of listening to him speak Klingon all I got was something about mod to the fuelling. Can anyone tell me what the update actually did, all I know is that I had to reset everything as it had reverted to factory settings etc. Mind you it does seem to pull better, if that's possible, or is it just because it's been serviced and I treated it to super unleaded...