Which Tuner is seeming to smoke the most on a 6.7 im leaning towards getting a smarty..Dont get me wrong im tuning for power not smoke but we all like to have a little fun and clear 3 leans of a highway

 

although its not recommended without head studs The h&s xrt or blackmaxx or mini maxx will make lots of smoke when stacked with the mp8 or heck for that matter buy them selves but as i stated if you stack be prepared for the consquences (blown headgasket) it will smoke like hell.
here is a video of mine with just the XRT