John did you agree with the way it was dyno'ed? I heard that the driver eased into the load pedal in still of flooring it. Would that make a difference in the numbers and data? Or is it , like always , data does not lie?

The dyno operator was consistent in the way that he did the run-up but yes he did ease into the throttle way too slow. Most of our trucks have large turbos and heavy fuel tunes. Mine was ran up to over 3500rpm with extremely low boost levels (<5lbs). This allowed all of that extra fuel to puddle on the piston top. You can hear the pre-ingition rattle clearly on the video. It made me quezy to listen to it sitting in the cab. It sucks up the combustion heat too soon or too late and you get some wacky numbers for sure. Once he floored it, boost jumped up to about 48lbs, but I only had about 1000rpm of fueling left (D-Max computers tend to stop fueling above 4600rpm as a safety precaution).

I have been driving the truck with some baby fuel tunes and it doesn't rattle a bit. Even with the largest fuel tunes, once you hammer the throttle the boost clears any rattle - you just gotta find out where the line is. Too much and it gets ugly fast. Another variable I am working through is low compression. On the strip nitrous will help be the great equalizer but on the street and at part throttle it doesn't even come into play.

I heard the rattle and it sounded like lots of fuel and no air. I think if he would of floored it sooner it would of been a good even match. Even tho the smoke was wanting to clear, i agree that the cylinders were already loaded down with as much it could take. Not enough rpm's to catch up?

Oh if you get pulled over on the street using nos , just tell them (this is all the parts GM had left) Came stock this way??
Crazy thing got away with it's self..