Im not looking for excessive smoke, I'm just looking for a little more than none

 

Smarty my man. then fuel system upgrades then injectors.

 

Smarty had one on my 05. U can run a smarty jr with no gauges they have it set up right so u don't need them. But I Allways recommend u install a set of gauges. I wouldn't buy a smarty jr unless that is all the power u will ever need I'd just buy a smarty so-6 pod My 05 stock clutch wouldn't hold my smarty on level 1 it sliped so I installed a southbend 3250 dd. Good luck I loved my smarty the only programer I would recommend to anyperson

 

No, you have Bosch CP3 which is totally computer controlled.

One thing I will say, unless your REALLY on top of the K&N and oiling it...I would dump it and get AFE or AEM or even a BHAF (Napa 6637). Better flow and better filtration than the K&N.

One thing to be careful of is excessive rail pressure, which some tuners can do on a CR. A good investment would be a rail pressure gauge...they ain't cheap but your injectors are 350-500 a pop too! Additional fuel filtration is NEVER a bad idea on this trucks either...I did this on my 04.5 when I had it:

Cat fuel filter set up - Dodge Cummins Diesel Forum
Cat fuel filter set up - Page 5 - Dodge Cummins Diesel Forum

My stock injectors that had elevated rail pressure for 100k were 205k miles old when I sold the truck.

Sorry for a bit of hijack but good luck.