Alright, so I recently installed a td04 19t in my 2000 9-5 2.3t, when i got around to taking it down the road it felt great untill it warmed up a bit, upon which I seemed to loose a conciderable amount of power and it developed a metalic chattering noise while accelerating under load. Also I should note that I can feel the chatter just slightly through the clutch pedal. Also when the engine is not under load and I rev it up alittle I dont get the chattering. Any help on what this could be would be highly appreciated. My guess is I've either developed a knock or something already is fucked up in the turbo I dropped into it. I'd love to be wrong about both of those guesses though...