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Not normal.
You should record some data with freescan. Your ECU might be opening the wastegate due to a lean condition or it can be temperature related.
Do you hear any whistling noise, like a boost hose leak?
You should record some data with freescan. Your ECU might be opening the wastegate due to a lean condition or it can be temperature related.
Do you hear any whistling noise, like a boost hose leak?