The past couple of weeks my turbo has been making an extremely loud wineing sound. And the other day i was driving and it lost all boost and started missing. It still builds boost but doesn't hold. I don't think there is a leak. I just baught a AMR cxr500 but I wana make sure it's the turbo that's making it misfire. There is no metal shavings in the oil or anything. Do you think it's just the turbo?