My 06 would make a huge cloud of smoke when you got into it if it had been driven easy for a while before. I believe if you add the tube off the bottom of the airbox it will help with that. I never tried it on that truck, but had heard it would remedy the problem from others. My 03 does not smoke at all.

My '07 smoked more stock than it does now with a Smarty Jr. on default SW1. Definitely had a good puff to it on the low end, stock.

CAC leak test....held 41psi for 2 hours and didn't lose anything.


It's beginning to look like the 04.5 and up trucks are smokers out of the box.

I will look into the airbox tube mod, thanks Matt! :c:

Of course this all depends....bought the truck for dad and he kinda likes the smoke now so WTF? :s:

i have a 05 cummins 6spd an stock it wuldnt smoke much/very little if any an when it did youd have to be matted redlining pegged plum out otherwise i found you culdnt make it smoke excessivly but add a box or programmer an thats a horse of a different color ;) hope this information helps

If the injectors are worn, it will smoke worse...mine did.

Agree. Look at the possibility of an injector problem. How many miles did you say are on the truck?

hmmm. remmebe ri test drove one a while back... revved it, slammd it, and not much smoke at all... so no, shouldnt smke to much.. maybe it has a programmer/tune in it? any more info on the truck? privatley owned? why it was at auction?

41psi ! THAT AINT STOCK ... IT HAS TO BE TUNED.

My '06 doesn't smoke with just air and pipe mods. Even sorta stuck in the snow the other day and very little black on the snow and I was on it hard enough to flag the CEL. My old '04.5 would puff a bit if it was really humid out.