something is wrong with that car or he has no where near the mods you have listed for him. My g/f's A4 WS6 with only lid-headers-cat back makes 356/360 unlocked and on 18" chrome wheels runs 12.8's @110. With stall it will run mid-low 12's easy. Who did the work b/c that may also be the problem.

My T/A with headers-cam(smaller than the F13)-stock untouched heads made 422/400 and ran better et and mph than the car in the video. I think he needs to give Matt a call and get his car to actually run.