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6.7 exhaust brake whistle

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hello agin everbody. Its been awhile since ive been on the forum so to catch yall up i blew up my 05 and now bought a 2012 3500. So anyways i love the new ride, and yesterday i installed the h&s mini max with a flo-pro tbe. As soon as i installed everything i started it and the mechanic helping me turned on my exhaust brake and the turbo whistled the 6.0 powerstrokes. loved it! It did it the first two times i started it and now it wont. Did something break? Any help would be appreciated these 6.7 are greek to me.

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Were you idle or going down hill with whistle? I know at idle it will only whistle if cold. And in motion will only whistle when warm.

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no at idle. it was warm outside too but the truck hadnt been started in a couple days, thats good to know that its only when its cold. As for driving,the exhaust brake works perfect.

no at idle. it was warm outside too but the truck hadnt been started in a couple days, thats good to know that its only when its cold. As for driving,the exhaust brake works perfect.

Yup, that's the weather temp. I believe it's 50 some degrees when the turbo wont whistle when on idle. The whistle means the turbo is engaged. It causes more work for engine when it's cold to warm it up faster. It's designed that way.
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    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.