Turbo lag? Does this happen when you first press the accelerator?
I am sorry to hear of this issue for your car and yourself - especially to drive you away from Audi as a current and future customer. In fact I am SO bothered by this I would ask you to PM me with the names of the so-called AoA tech team that diagnosed your problem and cause via "NYC Foot." This sounds so bizarre to me that I will elevate it myself within AoA to see what they mean and intend to do about losing customers over it...This describes my issue perfectly! In November 2015, I finally got the Audi of America tech team to test drive my car. After about an hour, they said it was what they call "NYC Foot." If you go from the accelerator to the brake, or vice versa, in under 0.3 seconds, a device will cut the (fuel) power. This was added to vehicles due to a lawsuit back in the 1990's when some motorist claimed that the car was too fast and could be used for racing.
I have had many near disasters when I have tried to accelerate in order to avoid an accident! I have been trying to get Audi of America to put all of this in writing for some time now, but it still hasn't happened. This is why I have waited so long to update my post.
I am trading in my Audi next month for a Subaru Forester. I will NEVER purchase an Audi again! I am considering suing Audi to try and recoup some of the money I am losing when I trade my car in. I will keep all updated. Take care.
Looking forward to seeing an update.Update : just FYI, I DO have some details from the OP and will pursue them to the extent I can either corroborate or resolve and both reply to the OP and this forum for all to know what's going on with this...
Stay tuned -