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First check for any shadow codes. Like for pending boost leaks. Also look at the airflow MAP sensor data. Perhaps the engine doesn't really know what the engine's airflow intake is.
I would also look at your divertor vales(there are two on the CP). And lastly look for any boost leaks... look for oil or dirt on the charged side of the FMIC to the throttle body. Perhaps your CP(charge pipe) has cracked ?
Dackel
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