Thanks for the reply RayChez,
We remove the vacuum line before the turbo and pluged it up to see what the max boost would be. It is still 10psi full pedal down building to 13psi at the shift. Checked the wastegate and it appears to work freely with no sticking noticeable. Mechanic tell me when they rebuild the Holset turbo they might have used smaller fans, thereby causing less boost. I guess that sound reasonable to me, I know zip zero about turbo. They don't appear to be too complicated though.
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1995 40' Gulfstream Tourmaster
300hp turbo Cummins diesel on a Spartan Chass
Toad - 2000 Saturn
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