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So i have a 1985 buick grand national. And my issue is that when im driving it never goes past 0 pounds of boost but i can hear the turbo spool up. I was thinking of opening the wastegate more but then again i dont want to overboost the motor.

I have a 1985 buick grand national has upgraded 65mm turbo I think, 42lb injectors. Upgraded walbro fuel pump turbo tweak chip. And has a 86-87 ecu. The issue I am having is when I first turn it on and drive it around runs great just has a little stutter under super heavy boost. Then I park it...