I have been having problems with my truck cutting out while driving now it seems that the throttle is sticking when in park if i rev it up it will stay reved up after i let off and still cutting out like a miss fire until i kill it .this is after i put it back to stock . is there a chance the smarty left smoething in my computer that is making it do this

 

If you put it back to stock and it still does it does not sound like a smarty issue.