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Re: 03 F350 Rough Idle when cold
the 00-03 7.3 have a heating element in the Y pipe after the turbo for quicker warm up. a lot of guys like to remove this for an unrestricked air flow.check and see if you still have it. rough idle at start up could be the injector wire harness under the valve cover. go to the "powerstoke forum" there are a lot of knowledgealbe guy there.
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