Fast truck requiring a big tune. Big tunes require lots of fuel.
If your truck is starving for fuel, you will know it!!! Throwing 1093's codes and bursting/cutting out are all indicators of low fuel rail pressure.
Added lift pumps forces the fuel to the fuel rail, helping alot with the issue of not enough fuel with a big horsepower tune.
Try doing a search, you will learn a bunch!!:ro)