idling turbo whistle on and off? - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 04-14-2012, 10:33 AM Thread Starter
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idling turbo whistle on and off?

I have an 04 f250 with an 03 motor. Have a complete 4dp& 5 inch straight pipe exhaust. With a livewire. While the truck idles it seems to go through phases a soft exhaust note with a lot of whistle and the a deep note with almost no whistle. Is this the vein sweeps that r talked about? I have gotten my custom tunes emailed to me from chris but havent installed them yet. This question is from having the canned tunes installed. Thanks!
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post #2 of 2 Old 04-14-2012, 10:40 AM
back to business

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That is indeed the vane sweep

2007 - F-250 Lariat OUTLAW

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