So I came to a stop yesterday and the truck sounded like it was loping, just like I flipped a switch for an ICP mod. It would lope so bad the truck shook violently then stalled...I had to drive one foot on the brake olne on the throttle to keep it running at stop lights. Then all the sudden it went back to normal. It didn't throw any codes. It was fine the rest of the day and then this afternoon it began to do the same exact thing... I have a few ideas on what it could be but I want to see what you guys think. Thanks a lot.