hi my diesel has lost power, seems like it has no turbo boost.it has been running fine and still runs smooth starts eaily etc. put a code reader on the ecu no dtc's no warning lights, maf readings go up and down with throttle press/release, tps moves up and down, temp stable at 90 idle steady at 750 rpm. Map readings stable at 90 is. Does anybody have simialr experience or ideas?
Car has 95k full dealer serv history.