Was racing a golf TDI and ripping him apart, got to the roundabout and thought i'd show him the grip on the 4x4 anyway pulled away hard and it felt like the traction control had kicked in (no power). So i stuck my foot hard down and the car nearly stalled, it was lumpy and running on only 3 cylinders i think. So the golf pulled away and i had to find somewhere safe to pullover. Anyway audi roadside recovered me and a technician came out on sunday to sort out the replacements, and they have made a huge difference to the performance, even cold starts, i reckon my coil packs were on there way out for some time. All i'd like to say is that the Audi customer service was superb.