Well .. the ringing sounds like scrreching.... I can hardly hear it with the windows up but when there down i hear it pretty good... when i'm adding gas i hear it when i release gas i hear it when i am in neutral and cruising down i can hear it... i dont go over 4krpm.. its not coming from the exhause... i can hear the WOT but i dont think this sound is coming from the turbo...
it seems to be more towards the driverside wheel... could this be wheel bearings or something?

whoops hit wrong button... this reply is suppose to be with my ringing noise topic...

We've all done that! (Well, not me. Or Keith).
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