I replaced my MAF pipe and MAF (stock) today with a powdercoated black pipe and saw a ring of oil in the turbo where it connects to the MAF pipe. I am assuming this is a problem? The car blows smoke only at certain times, for the last 100 miles nothing but today smoke when coming to a stop at idle. Smoke is white and smells like burning oil. I do not have any leaks visible in the drive way. I do have a 27k mile stock turbo to replace this turbo that has 73K miles. Is it time to replace it? I have read this site about play in and out and side to side and there was not much, if any, but this oil issue and smoke issue has to be a turbo issue. I do have a new 93 octane TT chip, if I install this would that help? I have a cracked DS header, could this contribute to the issue (I have a repaired one to replace this). Thanks