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Message: [QUOTE="steve604, post: 1188870, member: 13670"] 2012 6.7 with about 200,000km, fully deleted with H&S for about 100,000km. the sound became noticeable a few months ago, has slowly become louder. it's always under 2000 rpm, closer to 1500 rpm. the truck runs great, hasn't lost any power. there is plenty of boost, very little smoke on take off. new belt, new tensioner pully right after that. i think that the only thing this truck has that's slightly out of place is what looks to be a positive air sutdown before the intercooler but it's not wired (it looks factory installed to me) [url]https://www.youtube.com/watch?v=aaYFrIVZdoc&index=2&list=UU4hrvVvfZ8QbcG-8YReB5cg[/url] [url]https://www.youtube.com/watch?v=HADmPDzi-9U&list=UU4hrvVvfZ8QbcG-8YReB5cg&index=1[/url] when driving, it lets out a loud squeak when taking off from a stop between 1000-1500rpm and then it's gone until the next shift. it seems to be louder under heavier load. we pulled the intake plenum off a few weeks ago to see if we could find anything and the turbo wheel looks good, very small amount of shaft play. the sound seemed to get quieter for a few hours of driving after pulling the plenum off and re-installing but came back just as loud. [/QUOTE]

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