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Discussion Starter #1
i have a 07 6.0 with a new stg 1 turbo and it has the normal whistle that every aftermarket turbo has but there is also a lower pitched sing when at about cruising 50-60 ish. Any help???
 

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Discussion Starter #4
i should better phrase this, the "ring" comes and goes but under heavy throttle and no throttle there is no ring but light throttle there is a ring
 

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Discussion Starter #5
and no exhaust leaks, everything is tight
 

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Hey, smoke, where does it sound like the whistling is coming from?
 

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Turbo mounting bolts loose/missing?

Sent from my phone that somebody didn't help me get.
 

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Discussion Starter #8
problem found... its the up pipe bellow one is torn/broken lol looks like the heavy duty one is on order. thanks everyone for the help!
 
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