Add-ons
Man, lots of add-ons for you new ride.
I have the 2500, and wish I had the 3500. But engine-wise, here's what I'd do/have done:
Fueling box--I have the EZ, but would get the Comp if I were doing it again. In fact, I might do it anyway
Injectors: I have DD stage II in my ETH. I love them. I think they are very adequate for my needs. I tow, and anything more would just create high egt's without any other mods. However, if you want more screaming HP, get teh DD III's and one of the wild boxes. I guess the Comp can be wild on the higher settings. The great thing about it is it is adjustable. Best of both workds--towing and screaming!!
Exhaust. I have the 4" DD exhaust with Walker muffler. Nice. Souds good, and my egt's went down about 150 degrees under WOT. Hey, if you want to get wild, stacks look cool on the duallies!!
Exhaust brake: I have the Jacob's brake form Cummins. It works well enough, though the BD, as others have told me, has more braking power at lower rpms than does mine. But it is also more dinero. I also have the shifter mounted switch.
I have the K&N air filter in the stock box. But, I am planning on something similar to the BHAF, but hopefully a little better. More on that later.
Guages: Mine are the DD Autometer egt and boost on the pillar. They are great, and closely match the dash cluster.
You got me all excited. I almost want to sell mine and get another just to do all this over again. I'm getting a little sick. Fever coming on... I'd better go lie down. I think I'll go sit in my truck!
Have fun with it.
SOLER