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944 Turbo S lack of boost after 'cold' start

Engine

Vehicle Information: Model(924/944/968): 944 Turbo S; Year: 1989; Body Type: Coupe; Total Mileage: 110,000;

My 1989 944 Turbo (S) has had a engine 'ghost' since it was new, let me explain. During a 'cold' start the engine will not develop full boost, I say 'cold' since once the engine exibits the problem no matter how hot the engine gets, it still will not develop full boost, unless the ignition is completly shut off (reseting the computer). Also as the outdoor temperature gets colder the problem get much much worse.This problem exisited prior to the installation of the AutoAuthority Stage II chip.Any ideas?

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