2 things. If the car is not missfiring its not Coil Pack. The car will have Jerks etc loss of power and gain on 2 things.. Coolant Temp Switch or AFM. To rule the AFM out, at point where the Jerk etc is happenin, stop car, switch off,disconnect the AFM. Re start, maybe a bit hesitant at start, this will be due to the ECU realizing that the AFM is disconnected. Drive the car, and see if theres any dfference, If its still the same, stop car, switch engne off, and re-plug it back inn. You do not need VAG COM to reset this as it will do so buy driving the car 8miles+. Only thing that would be left