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Odd, it kind of sounds like the video below (from this thread). The culprit was a loose wastegate hose. But the poster datalogged a run and hit 30 psig. Looks like your boost pressure is in check. Doesn't sound like the sound suppression chamber whistle.

Hi Hank, I just test drove a 2016 with 6,500k It made a similar noise for the turbo on cold start. It only lasted for about a min. Then never made the noise druring the test drive and i pushed it all the to the red line 1 through 3rd. Car has a blow off and a cold air intake. Other than that it's stock.

Thanks,
Adam
 

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Hi Hank, I just test drove a 2016 with 6,500k It made a similar noise for the turbo on cold start. It only lasted for about a min. Then never made the noise druring the test drive and i pushed it all the to the red line 1 through 3rd. Car has a blow off and a cold air intake. Other than that it's stock.

Thanks,
Adam

It would need a sound suppression chamber SSC.
 
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