i was about a mile from homew today and the truck just started to shake like it was missing i was just cruising not beating on it, got home it idle really funny returned to stock started fine then tuned the bad gas/ towing test drove no problems, then up loaded the street tune again and no problems is something goin bad i dont know about or way?

 

you might have a COP going bad. I have had 3 go bad on me. Also you might have an injector going bad I have had one of those go bad also.

When this happens again disconnect the injector harnes from the injector one at a time until you dont hear a change in the idle then this will be your effected cylinder. swap the COP to anoher location to see if it folows the COP or stays in the original position. If it moves then it is a COP going bad if it stays the same it could be an injector. Good luck.