Florida technically has no law on nitrous IN a car(unless it changed in the last year) It is a OFF-ROAD product and unless you actually use it, I believe you can have it in your car but it needs to be turned off.. other states are diffrent, but I remember back about a year ago a MOD on Club Si purged by a FHP and he did nothing about it. I guess it all comes down to the officer, If he has it out for cars that appers to be fast/or is having a bad day, I am sure you will get hasseld about having it, but as long as it is OFF you should be fine.....