As some of you may know I recently got my Cummins that I have dreamt about for quite some time. The stealership was running a sale I just could not say no to. Many mods are planned but after some time to let the wife deal with the sticker shock. I can't very well buy a $40k truck and then drop another 10k in mods a month later. I would have had my ***** physically removed. Anyhow, back on subject. I was under the impression that even the '06 5.9's like the one in my 07 truck was a very clean motor and I would have to mod it to get any black smoke out of the tailpipe? I found this disappointing yet understandable. Just last night though, one my way home I had to get in the gas and jet around this rediculously slow old couple in front of me. Low and behold, black smoky goodness. I am not talking clouds of diesel death here ( that would've been cool too), but it was noticable. Now don't get me wrong, Happiness and giddiness ensued, I just want to make certain that there isn't anything wrong for a newer engine with less than 1000 miles to put that out already. If nothing is wrong Woo Hoo happiness. Please Diesel Gods, put my mind at ease.

Same thing happened to me. I bought a 07 5.9l and I picked it up at night time so I couldn't see anything then, but the day after I got it I just couldn't resist and I punched it once in 4th at about 40 mph or so and a little black smoke did puff out (I was so happy, I about wet my pants). Anyway, It now has straight exhaust no cat and no muffler and it hasn't ever puffed that much since then. It does still do it a little if I really get on it, but you can barely see it at all. I think to get the smoke we are looking for, you'll need a chip/controller. Anyway good luck with the new truck, I haven't had any second thoughts about mine at all, love everything about it!

BTW our trucks have 4" smooth bend pipe from the factory. I took mine to the local dirt cheap muffler place and they cut out the cat and muffler and welded in a straight 4" piece to replace them (with all the appropriate hangers and such, and painted the welds) for - $30 labor + $35 parts. That would be a cheap "mod" and it sounds sweet too!!

these thigns will smoke a little stock. . .more like a blackish grey haze. now when I turn my TST to 8/8. . .let the coal roll. . .untill the turbo catches up that is

thats the nice thing about sticks. with autoit is hard getting a little black to come out of the tail pipe.

pretty much what I expected, and hoped.... Just wanted to make sure I hadn't broken the indestructable somehow

Mine has a/t and it makes a little puff, nothing spectacular, what impressed me more is through the intersection there was a little roughspot and after I hit that the rear tires spun the rest of the way through the intersection. Even Stock , these babies have some giddyup!

If you want to maximze your smoke on a stock truck, drive around real slow and easy for a while, when you punch it after doing that you will get more smoke.

If you do just put around it is good to push it hard everyonce in a while to clear out all the carbon build up.

I have notice a little black smoke from mine since i str8 piped and added the Air raid. Never noticed any before. Its not alot but enuff to be seen

I can smoke it up since I put my Rokk sensor in , if somebody rolls out in front of me and goes to sleep in the lane the peddle goes to the metal she kicks down and will leave a good amount gray-black smoke, in their car and for them to drive through.

It nice to adjust the mirror sometimes just to watch the smoke flow