random misfires and coil pack recall
Recently had my '03 A4 1.8T (AWB engine) into Deal Audi in Asheville for a catalytic converter change under warranty. At the same time, it seems there is a recall for all four coil packs - which they performed while it was there. While I wasn't having misfire issues at the time, I have had random misfires in the past, especially after changing the plugs at 80K miles a few weeks ago. While I don't know the year models involved in the coil pack recall, it doesn't hurt to check to see if your vehicle is part of the recall and at least get the the new coil packs installed if it is involved.
Mine certainly did have significantly better acceleration after the update/recall and I have no more issues with misfires at all. The catalytic converter is scheduled to be installed this upcoming Wednesday after waiting a while for the part to arrive then scheduling a time to have it installed as our local Porsche, Mercedes, etc dealer lost his Audi franchise in Kingsport, TN and the closest Audi dealer is now 80 miles away in Asheville (Arden), NC or 100 miles in Knoxville, TN.