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    What Could Be Causing 'bogged Down' Acceleration

    Hi - I've got a '89 Supra Turbo M/T with 110k miles (bone stock). Replaced head gasket last year. In the last month the turbo gauge has flat-lined (needle never moves - even on hard acceleration) and in the last week it's getting harder and harder to accelerate. I have to rev to 3000 rpm and...