Was breaking motor in, pulling gooseneck with tractor on it, on pulling tune. I got up on one side while on tow tune just fine. Switched over to sled pull tune......wow.....thing will turn into a monster. My 40psi gauge will be buried, EGT's get really hot, so I didnt keep it there long. On one of the last hard pull, heard "pop", white smoke, no boost, then turbo starts making grinding noise. Had to limp up the mountain, white smoke pouring out like crazy till I got home. Engine runs fine. Thought it might have been intercooler boot, but don't think so. Question is, which turbo should I go with? Needs to be T4i mount. Thinking of the swamps BFH. What say you guys?