my 2nd opinion
Dodge isn't gonna care all that much,, You'll come it a couple dozen times,, get all frustrated, then Leave,, maybe buy a Phord or Duramax,, there problems are over. (Yours could be just starting)
A certified Cummins shop is on the Flip side. These guys take pride in their motors.
I think the problem you guys are having,, Rough running, Low Power, Bad Mileage. .
Especially klenger,, smells funny and runs rough, (If you are serious, I'd hate to ignore you then it be true)
I've had my VP44 kiss the Cummins goodbye,, But it was L--O--N--G Kiss, atleast for me it was,, I got down to 10MPG empty in the city,, was smoking blueish, grayish, and a touch of black. My rear fender was covered with the nasty oily stuff, not just diesel soot. was sometype of oil or something (might have been REALLY Thick soot)
Well, no power,, wouldn't touch 85MPH emtpy, and lousy MPG,,
My Advice. . stop by a Cummins shop and ask 'em what's up!?! Don't be MAD,, you need to want to solve the Problem. . I work on model Airplanes at times,, if a person comes to me and is all MAD about his STUPID Good For Nothing Plane doesn't Fly Right,, (And other people love the same type of plane) I would be a bit frustrated with it,, knowing that when I'm done putting my heart into getting it fixed, he'll be thinking it's gonna fly perfect, or be a POS.
The VP44 is a strange creature. With how many Dodge/Cummins are running around the loss (breakage) rate is EXTREMELY LOW,, knowing that,, There are bound to be failures as no one is perfect.
Also,, This problem most likely won't be solved over the phone, or with raised voices.
Plan some time with your Local Cummins Shop to have them investigate. .
It took two-three months for me to get my Cummins to go from 10MPG and low power, to 15MPG in city,, and now I'm back down to 11MPG and 350HP (I LOVE Smoke, but my friends say it stinks, to bad for them

there gassers stink)
What did it take for my truck to go from low-power 9-10MPG? to 11MPG w/350HP ?
A new...
Throttle Position Sensor
Lift Pump
VP44
Exhaust Manifold
^^Those mods (BOMBs) brought me up to 15-19MPG in the city and 20MPG highway
Air Filter (BHAF)
New Injectors
PE Comp
New, Custom Exhaust
Gauges (okay, they don't enhance ACTUAL power)
^^ These mods brought me up to about 350HP and 11MPG in the city. I went 358 miles on 34 gallons, all city miles. The side of my truck, from Exhaust tips (In front of wheels) from the Back of the tailgate was untouchable unless you wanted to get a considerable amount of Diesel Soot on you.
I still have the stock clutch,, but it's not a very happy camper on anything above setting "3" on my COMP.
Final opinion,, stop by a Cummins Shop, and take the time,, Who knows how many people all want their engines fixed *NOW* ASAP!
MerrickNJr
P. S. Sorry for long post (again) it's the darn typing classes. Hope you like reading.