I have a 06 qc 2500 short bed and I'm looking to add a little(100-150hp) spray to. My question is- Can I run a dry shot on the motor ? Does the Mopar computer have the ability to richen up my fuel mixture through the injectors like they do in GM cars and trucks ?

 

NO - Dont try a dry shot, the pcm will do nothing. Only use a wet shot. I ran a 125 wet NX kit on my 04, about 15 bottles with no problems.

 

I was thinking about running a 100 wet then and just mounting a 5 lb bottle under the hood somewhere. I really dont see any space inside the cab where I can mount a bottle so that I can still fit 5 people in there. Maybe under the rear sets but that looks tight. What pill sizes are you running?

 

You can fit a 10lb bottle under the rear seats.
Swap out the stock plugs to 4306 NGK's and gap to .035.
I believe I used 52n/33f jets for 100 shot. It ran a little rich but I didnt mind.

 

The early 5.7L motors were chunking pistons, running rich like CS did is a safer bet.
The other bad thing is tranny failures. Not sure what you have in the 2500HD but the 545RFE was smoking the OD bands when gassing and shifting to 3rd.
Again not sure how the new models are put together, maybe someone will chime in?!?