So if I am cruising along and decide to shift down into a lower gear and floor it....the car stumbles like when the traction control kicks in for a split second. The motor makes the sputter sound and then takes off. I am thinking there is a misfire going on. I had the coil packs replaced under the TSB back in the fall but not to sure I trust the dealership really. What do I need to look for to make sure they swapped out the coil packs with the correct version? I have also replaced the Cam Follower and swapped out the OEM Diaphragm style DV to the new OEM Piston Style right before winter. I am going to hook up a Vagcom and see what the computer tells me but wasn't sure if I have to remove the coil pack to tell what version I have now or if there is something else I should be looking at. The car has 57k miles on it too.