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I have a 2003 Ford 6.0 with 67,000 miles. In tempuratures below about 30 degrees, it sounds like it's not running on all cylinders when it starts. It only does this for a few seconds before it smoothes out. The truck is stock except for a programmer and exhaust. Any ideas? Thanks
 

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does it have a updated calibration from ford for cold start?
 
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