Re: how to make stock 6.0 blow smoke
As you have an '03, you don't have to worry about current emissions, and as such, you can run on several types of diesel fuel, including the new ULSD. On older diesels, you can add a couple ounces of two stroke engine oil to the fuel tank. It won't hurt the engine, but can affect catalytic converter performance down the road due to the petroleum distillates in the oil. Anyway, a friend of mine who owns an older 5.9L Cummins, added some 2 stroke oil to try it out and it gives some smoke when you put the pedal down, but is fairly clear during normal city driving as to not attract attention to the MTO/DOT for a roadside inspection. He adds more oil now to give off more smoke, however too much oil WILL eventually clog up the valves and such, not to mention emission components.
Programmers can be tuned to run rich, but with ULSD, it's harder to get black smoke on purpose. I don't recommend a programmer to just give you black smoke. A lot of other variables have to be considered when operating a programmer, as some can add 800F in temps to the exhaust and cause turbo failures, and other mechanical and electrical maladies that you just don't want to deal with. There are ways to compensate for the added temps, but it comes down to how much you're willing to spend. $0.25 in 2 stroke oil every tank is the better route to take in my opinion.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!