I'm curious as to about how many sprays per 10 lb bottle you all are getting with the 35 and 50 hp NX jets? What about those that have 5 lb bottles?

thanks

 

here's a calculation from the NX site:

Q. How long will a bottle of nitrous last?
A. That depends on the level of power being produced. The formula for calculating your nitrous usage is: 0.8 lbs N2O X 10 seconds = 100 horsepower. I.E. If your system is jetted for 100 horsepower it will use 0.8 lbs of nitrous for every 10 seconds of usage.

Of course purging most come into the equation as well