ok, the nitrous kit was just installed and we took it out on the street just to see is everything worked before the car went on the dyno. everything was mint, pulled clean and strong. the bottle only had about 12lbs in it. we decided to top off the bottle before we took it to the dyno. on the dyno, the car broke up really bad, buried the wide band rich. now it breaks up on the street as well. we put 6lbs in the bottle to top it off, is it a possiblity that there could be bad nitrous or that their nitrous station ran out and they fill it with crap? we did not change anything except that, any ideas?

by the way, the kit is a TNT LT1 plate kit.

 

If you have a purge purge the system and see if it is a good staedy cloud.Weigh the bottle and see if it actually ways what it needs two.
If all that is fine and it is still rich trim down the fuel jets.
Dave