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i am noticing this fluttering sound when under partial throttle at times now after flashing the stage 2 tune on my 2020 sport 2.0 with 1500 miles.

it seems to be when its trying to build full boost when i dont really need it at times because of the weird throttle response with the pedal and its the re-circulation valve just working over and over to keep the boost level. just wanted to get opinions, as i dont want to mess anything up.

 

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I would reflash to stock and see if it disappeares then reflash stage 2 or even 1 again and see if it goes away, that sounds odd for sure. I'm running stage 2 on ktuner and there is zero fluttering, just like stock. Do you have other mods?
 

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That's your wastegate fluttering to mitigate boost. Did you enable "early spool" or "quick spool" in your tune?
 
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