Have a 04 F-250 SRW 2WD Pickup...140,000 miles

OK I plan on keeping this truck for the rest Of my life! So I want it to live. I don't drive it much except on long trips with 20' car trailer. Get 16-19 mpg now. Only issue is on start up...loud noise real ruff hard to start...but after warm..GREAT!

Mods: K&N Filter..stock Box

Predator tuner lowest setting

Questions: here is what I think I should do to help it live longer, and hopefully increase mileage as well:

EGR Delete.....Intake Neck.....3.5" Downpipe CAT DELETE, Oil Cooler Kit Clean turbo, maybe different impeller....add a Ford OEM "Blue Spring" , Fuel Pressure Regulator Repair Kit..., ..FORD / INTERNATIONAL 6.0L DIESEL STANDPIPE & DUMMY PLUG KIT Ford OEM Part # 6E7Z-9A332-B Ford 6.0L Updated Turbo Drain Pipe Improved, Ford 6.4L Diesel Fuel Banjo Bolts Upgrade for the 6.0L Banjo Bolts



I like power but it has plenty now Mileage and life is what I am looking for and easier starting and better warms up..but really want the EGR gone.


Suggestions?