[PDW]

im having the same problems as you are minus the louder exhaust... i changed my dpfe and its still occurring.. on the topic of the feul pump the dealer has told me i have had one replaced before when the car was newer and that if i was to replace it now i wouldnt be able to replace it again because its extended coverage only covers till one screws up, then they give you 1 new one and thats all. so he advised me to wait till it actually breaks....psycho.....what if im in a snowstorm or something wild..
anyways, let me know what us find cuz i cant get any other info...