Nitrous is not that bad, its the addiction and the fact that it is too easy to run too much.
Typical scenario is that a guy starts running the hose, has great success so he pills up a little, runs even better and so on. Before you know it he is shoving the biggest pill available in the system and then bam..... cylinder pressures though the roof and he smokes the motor. I see it happen all the time. A lot of people seem to think that if a little bit is good a whole lot is better.
Does the above sound like a N20 problem or a user problem? Most blame the juice!
We run it, and sell a ton of 2 stage kits and really don't have any problems. We run a 52 jet in our Dmax and have never had a problem.
Quad