I am in the process of installing a 60 shot dry system, However I will be running a richer map, I have an air fuel meter to watch for lean conditions, as well as a progressive controller to ramp up the delivery of the NOS. The basic NOS kit isn't too much its all the add ons that cost $$$ It seems that most do a 40-50 shot, I went 60 with a progressive controller so that I can set it lower and move on up slowly. I will be taking my bike to HPC for dyno tuning hopefully this summer (if the wife will let me go) if not then next year. If you have a dyno tuner near you then I would use him, that way you will be able to pass more gas (NOS) saftely! I was told that anything above a 60 shot would require a second fuel pump and regulator for a wet NOS setup.