Put in the 100 jets or even 200 take it to an airfield & gun it flat out for a mile or so, if you have seen no smoke in your rear view or its not stopped in a cloud of smoke I guess its OK & you dont need to spend on a controller.
To get Nitrous to be reliable means getting it set up properly & having it checked during a Topspeed run for afr & det, forget the fuel/Nitrous settings the kit manufacturers told you there main aim is to be safe & stop 99% of people that use their kits from blowing up their engines in the first 10 minutes. Using their setting mine made only 70% of jet size on a rolling road, correctly set you can get nearer 150% of jet size.
If you are on here asking it probably means you aint got any idea how to deal with Nitrous so factor in a rebuild as you are going to need it.
Chip sounds harsh but he knows more about Nitrous than anyone else on here & sorted mine out big time .