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2003 6.0 but not much whistle...
I recently bought an all-stock 2003 Excursion 6.0 built 11/02. From descriptions I've read it should be whistling like a jet even at idle but I just don't hear much. A little wind-up sound but not much else.
I got the Oasis report and nothing unusual there, no turbo replacement or really anything significant despite being an "early build" so maybe it was one of the good ones. All the latest software updates are present.
It runs as strong as expected, boost reaches up to 24 psi according to OBD II data and thankfully no error codes so I'm wondering if maybe my catalytic converter is soaking up all that great turbo noise? It has 110K miles. Cat and muffler are original.
Also, the insulation on the hot-side intercooler hose... is that there to reduce turbo noise?