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Weird noise?
I was driving my truck today and noticed a weird noise comin from the exhaust pipe. It sounded like air was blowing really fast out of the pipe, it was doing it repeatedly whether i was at idle or driving down the road. It sounded like the turbo was spinning on its own or something and blowing air out of the pipe. It went a way when I would hit the pedal but would return. I am still fairly new to diesels but am just curious as to what the noise is and if i should be concerned.
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