Is the "virtual" read that comes from the HP Tuners servers for the SIMOS 8.4 ECU the one that needs to be flashed to the ECU if going back to stock?
New to the Audi tuning game, as I didn't have my original 2010 S4 tuned several years ago. I now have a 2011 S4 and am working with a talented tuner. However, I want to make sure I have a path back to stock for any unforeseen challenges.
Thanks all..