Other topics to address would be the timing issues associated with A NO2 shot compiled with a boosted engine. In order to stave off detonation in a high boost engine you need to run a certain octane as well as a specific amount of timing and the proper amount of fuel. Withoout these three things working together you will most likely encounter problems *BOOM*. With these all set to a specific level, say, 21psi, as soon as you hit the NO2 shot, say, 100shot, you need to find some way to increase these levels, or the previous *BOOM* we discussed will occur. So you have the proper jet in the fuel solenoid, perfect. You spent the money and got a timing retard module or some other way of causeing the timing to retard when you hit the NO2, excellent. But you still have no way of uping the octane for the NO2 hit other than running too high an octane fuel all the time, correction, Propane. Yes I just introduced another thing for you to search and question and research and basically hurt your brain on. Why would one inject propane into a gasoline engine you ask, because it is an excellent form of on-demand octane booster, thats why. Other ways you could do this are to inject alchol, many people on the board are already doing this. Don't be scared by any of this, people have been compiling power-adder upon power-adder for years, just do A LOT of research before you buy anything.