Hey fellow 7.3 PSD friends! This is my first post-not sure what I'm doing or the proper process to reach everyone--here goes. I have a 2001 F-350 PSD 7.3L ,Automatic,3.73 gears and pull a 37 ft (approx 14K lbs) 2006 Designer Fver ,and would like to know what power and mileage mods can be made at a reasonable cost without major work or expense? I have a straight pipe(no muffler)K&N air filter,4+qt larger Hughes Tranny Pan,Air ride bags,air gate tailgate replacement,and have drilled out the plate beside the radiator to get a Ram air into the air filter snorkle. I currently get 22.8 empty,and 13 mpg towing the Fiver at 1,700 rpm.Heard talk about these mods;EBP deletefoil delete,AIH delete,HPX,ATS shroud,ccv trap,tru-cooler,etc--Can anyone tell me what all these mods are exactly,how they are done and RESULTS!! THANKS, Harry C. Risher