These are the directions I used for running DP:
http://www.peachparts.com/shopforum/showthread.php?t=113596
Just some advice from personal experience:
If you don't have an extra of the line that runs between the in-head heater and the prefilter (as I didn't) and you choose to disconnect it at the fuel heater, MAKE SURE to put a piece of duct tape over the opening on top of the heater! If you don't (as I didn't) all the fuel will drain back to the tank, filling the supply line with air.....it was the biggest purging job I've ever done, ended up with a brand new battery charger because even my excursion couldn't supply enough power to crank it. Also don't let the DP supply line suck air, the running engine will fill your whole IP system with tough-to-purge air. This is also where I went wrong.
Aside from my mistakes, DP worked well and cleared out a boatload of carbon and the engine runs better than it has in a long time.