He has a Ford 2003 6. 0 automatic 4x4. Only mod done to it is 4 in. straight through exhaust. Everything else is bone stock. His last two camping trips pulling his fifth wheel he has had some issues with power. His truck will be pulling along a flat road and suddenly he notices that he cant get up and go. Meaning that his truck won't accelerate much. He says eventually staying on the throttle for a period of time the power starts to come back and the turbo starts spooling up again. He claims to have never had this issue before removing stock exhaust but then again he only towed once with the stock exhaust. I know this is a powerjoke and all but I figure who better to ask then the experts at the TDR.