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Discussion Starter #1
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 get a flutter once and a while but never like that. Seems like your diverter valve isn't holding boost pressure. But you say its only on partial throttle so idk, I'm curious to see what's causing this.
 
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