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If you have no boost, you have no power! Check with engine running at idle that VNT actuator raises up against stop screw and stays up! If it fluctuates up/down at idle you have vacuum leak hence no full vanes opening causing no boost.
Swirl valve is closed at idle and opens when RPMs are above 1200.
Regards
Last edited by Rumcajs; 14th July 2015 at 08:34 PM.
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