MY BUDDY HAS A 2000 3500 WITH 5'' STRAIT PIPE, LIFTED AND 37'' TIRES OTHER WISE ALL STOCK. AND HE HAS BEEN HAVING PROBLEMS WITH THE TRUCK SHUTTING DOWN WILE DRIVING BUT IF IT STARTS TO ACT UP AND YOU GIVE IT HELL IT'S FINE FOR A WILE
THE CODE DIPLAYED IS TURBO EXCEEDS MAX RPM OR BOOST OR SOME THING CLOSE TO THAT. ANY CLUE

 

The overboost code could be either the wastegate sticking or the MAP sensor is shot...not sure why that would make it run like crap...other than the truck starting to defuel...