I know this was discussed in other post but it never was established as to whether there is a TB on the problem. I have had my S in once and they corrected the software. However the problem continues especially at slow speeds and it is becoming dangerous i.e. pull on to a street after making a turn and the car almost stalling before lurching/surging ahead.

I am scheduled for another service next week and if there is information to help correct the problem I would like to know about it.