Welcome to the forum! I Recently joined the cummins game as well- I have removed turbo silencer and cat thus far- edge with attitude as mentioned above will be installed by the end of the week on my rig- enjoy!

i would look into smarty jr its a simple programmer and very compatable with the truck. also leaves no trail in the ecu in case the dealer would ever have to hook to it.

also. i would highly reccomend trans upgrades if you tow alot.

so I bit the bullet and bought an 04 seems dodge has not put in good enough fuel filters from oem

mine has 5" exhaust and an edge tuner I took off my ford ps

so when it comes to fuel filtration use the cat filter stock pump or a fass or air dog but they are soo loud


what do you all think about this

change out the factory filter with this

http://www.ebay.com/itm/261645401567?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
this for the cat filter

http://www.ebay.com/itm/360901306566?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

and this for a pump I know I would need a new draw tube in the tank this is what I am running on my 12v fummins

http://www.ebay.com/itm/High-Flow-Performance-Electric-Fuel-Pump-140GPH-Universal-Fit-3-8-NPT-Ports-/330873921560?pt=Motors_Car_Truck_Parts_Accessories&hash=item4d099f6018&vxp=mtr

I found this for the air setup

Homemade 6" Air intake, AKA the "whistler", tech write-up - Dodge Diesel - Diesel Truck Resource Forums

New here, but here is my cat/cummins dual filter installed.

It's good

EDIT: since this photo I have replaced the rubber hose with braided stainless lines. Overtightened the compression fitting on one of the rubber ends and had a sloooow leak. Since I put the stainless lines on....no more leak!!

If you are towing that much, I second whoever said Tranny upgrades. gauges, and a tuner might not be bad.