A few weeks ago my truck lost power and boost went all the way down. I could put it WOT and once it got to about 50 or ore it would build boost and take off. I changed fuel filters and put injector cleaner in and it seemed to be ok for a little while. The other day it stopped building boost all together. I talked to a few people who said my turbo is probably bad. I bought a new turbo put it in and nothing it still does the same thing. I checked the egt wire and plug an they seemed to be fine. I cleaned the ebp sensor as well. I am stuck and not sure what else to check or what could be causing this any help would be much appreciated.