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Power Strokes
6.4 Tech
6.4 Runaway?
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[QUOTE="OBS F350, post: 384174, member: 834"] My truck did about the exact same thing with my KEM 210 tune, it also idled super choppy and sometimes would sit and smoke white at idle when it idled choppy, but if you revved it up it would idle fine for a few seconds/minutes then do the same thing. Also when putting it in park/neutral at random times it would rev up to 2k rpms, sometimes less and go back to idle. Smoked black haze the whole time if you were on the accelerator the slightest bit. Switched to Gearhead tunes and have not had any problems at all since. I've ran Street, Tow, and Hot street and never had these issues show up again. By no means am I trying to down KEM tunes, I would have gotten the 345 if Gearhead didn't have such a good deal and got tremendous good reviews at the time I purchased. I may of just needed to reload the tune, but I guess we will never know now haha. Goodluck with the diagnosis! Hopefully it will be as simple as mine ;P. [/QUOTE]
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