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Ok, this is a strange one. Over the past two days my car has developed a loud purge sound coming off throttle even at low RPM. Performance seems to still be just fine.

If I am driving slowly at 2500 to 3500 in 4th gear and let off the accelerator, I hear what sounds to me like a blow off sound or a purge of boost?

It happens in both M and A.

Anyone?

I am 100% sure I did not have this a few days ago.

Thanks!
 

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Yeah, that's a little weird. Maybe wastegate or ECU malfunction - dealer time! I'm sure they'll gladly fix it for you. Sorry that happened to you.
 
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