Well I finally got all the studs/head gaskets/HPOP issues straightened out and have been driving it since Saturday without problems,,,, until this AM. I noticed an intermittent whistle coming from the engine compartment at start-up this morning. Give it a little gas and it goes away, and then comes back. It is also noticeable at driving when around 1500 - 2000 RPM's. Sounds like a high pitched vacuum leak but it's coming from the area where the turbo is mounted. What could it be? Turbo bearings, Turbo Boot leak?????? I haven't had a chance to look at it thoroughly yet and am looking for suggestions.
Thanks in advance!