Join Date: May 2007
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Sounds like it may be a boost leak in the air to air piping. I've never messed with a 6.0 turbo, but I the one's I've replaced on semi trucks didnt give much early warning- they just kind of ground the bearings and died.
I'd check the intercooler boots first.
2002 F-350 Lariat crew cab 4x4 PSD auto, DRW with 163,000 miles, Ford AIS, otherwise all stock.
1994 F-250 PSD, 5 speed, open intake, 5" single stack, gauges, DynaMat, 302,000 miles.