Been thinkin about it and im gonna bite the bullet here in a couple days and buy the stealth 2 to use in place of my superchips. two questions really, how much smoke CAN this put out, and is it relativily controllable? also ive noticed atleast on the previous generation duramaxs that the quad tuner can raise the rev limiter up to 4400 rpm. can i raise the limiter to this rpm on my lbz?