i Just purchased a juice with attitude setup for my 03 duramax. It seems very responsive but no black smoke. I Bought it for a guy who took it of his truck so no manual came with it. I am not sure what some of the settings. i don't want to break anything so some info on this system is well needed.

get into the low boost settings,set the 3 and 4 power levels to max. its easy, and most will smoke,not like a ol dodge,but some.just keep trying,but mine dosent really smoke like you would think,w/ just a edge,i dont think much of the edge,and had to send it in 2-3 times because of problems it caused,search at this site for edge problem,so when it happens to you,you dont take it to the dealer for problems.

Yep, turn up the low boost settings. I used to run it all of the time with low boost on 5 and the chip set on 3 (drive). With increasing fuel prices I turned everything down to lowest setting and am seeing a 2mpg increase.

i have a PPE, suppose to be king of smoke right..! settings 1-3, no smoke at all on my truck. havent tried the higher settings. (stock trans) is this low boost option a seperate option on the edge programmer or does my ppe have this too?
i bought a ppe boost valve, havent installed it yet, but from what i understand this will probably increase mileage and make less smoke because its burning more fuel with the higher boost?