If you are going to play with a dry kit make sure you install everything. Fuel pressure is KEY! I don't know if the ZEX kit has a fuel pressure shut off switch, if it doesen't get one. Then on the "shot" start low like 50 and then bump it up if you want more. I have a JG/Edelbrock dry kit and that is what I did. Also make sure you tune your car before you start with nitrous. make sure you change the fuel filter and air filter. You should be just fine. I am up to 80 "shot" in my car and it works great!