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I had what's referred to here as 'turbo surge' on my 2000 7.3. Only happened when pulling my fifth wheel up grades, usually in the 16-1800 rpm range. No vibration just a goofy sound from the turbo, sounded like air bouncing around the intake of the turbo. I've read where people have had this surge issue bad enough to bounce the boost needle, mine didn't. I solved my issue by having a different compressor wheel installed on the turbo. It was $89 and cost me $150 to have it installed. I think most folks refer to these compressor wheels as a wicked wheel. Others do ported housings to solve the surge issue but I live in California and can't install one due to smog checks.
Maybe someone here with more knowledge in this area will respond for you.
2000 F350 7.3 4X4 SRW, SC, LB, VDO Gauges, JWVB, PHP Hydra, Tru-Cool Max, KYB Monomax, BTM, BD Brakeloc, S&B CAI, zoodad, WW, Firestone Airbags