Ok, I have a 2003 Chevy silverado 1500 HD. After the truck runs seemingly fine for 10 minutes it begins to sputter and backfire. It will actually die. I have replaced all the fuel lines, throttle body, pressure regulator, fuel filter, fuel pump, cat converters and the same issue continues to happen. I really like the truck but I am at wits end trying to resolve the issue. No one I have taken it to can seem to fix the issue. I can say that for some reason after those 10 minutes when I make a turn the issue gets worse.