Im running the nGauge on a '12, stock turbo, 5+ FloPro, full weight reduction, Spartan tuned and I can blow smoke on my 120,165,200 horse tunes very easily. One full push to the floor and back off real quick will dump it. If im on the 165/200 horse tune and going 30-45mph up a small hill or with a light load (1000lbs) in the bed, I can make it smoke for upwards of 5+ seconds. Just the way that its fueling right before the turbo lights up. I dont do that around town obviously. Not sure how much of a difference it makes that I live at 6000 Ft elevation... Montana does not have emissions testing because most of us still ride our horses to work and we have to go uphill in the snow both ways. None the less, cops have seen kids do it around town here, they pull them over and give everyone a warning, never heard of a ticket being written here.(probably because the cops here go home and do the same thing)