Sky InsuranceAH Fabrications
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  1. #1
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    Sudden loss of boost

    My 2002 A4 1.8T doesn´t boost like it used to. I have an APR chip and a hyperboost valve. I don´t hear the turbo whistle as before when I step on the gas pedal. What could it be? thanks

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  3. #2
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    Re: Sudden loss of boost

    You may need a new Turbo Diverter Valve. When this component fails, it causes boost issues.

 

 

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