Very good write up. That being said I have a couple of things based on my exsperiance that might be helpful.
Most aftermarket chips use more aggressive timing advance curves to create more power. This can lead to possible detonation. Check with the manufacturer of the chip/Tuner before using it. Some manufacturers, such as Hypertech make special chips/Tunes for use with nitrous.
Always a good Idea to use a spark plug with a cooler heat range. I use kinda the same principal as timing...I go 1 heat range per 50 hp
In turbo applications, turbo lag is completely eliminated with the addition of a nitrous system. In addition, both turbo and superchargers compress the incoming air, thus heating it. With the injection of nitrous, a tremendous intercooling effect reduces intake charge temperatures by 75 degrees or more. Boost is usually increased as well, adding to even more power.
Also I didnt see it in the OP but optimal bottle pressure is 900-950 PSI.
As a general/"Safe" rule dont go above a 40% to 50% increase in power output from your stock engine. However with good tuning it can be done safely
Most late model ignition systems good for reasonable amounts of nitrous. Higher HP cases, it may be advisable to look into a high quality high output ignition system
Just like with other types of Forced induction there comes a large increase in Exhaust gases. Therefore a well designed exhaust system, header and exhaust ports will further complement the use of nitrous. More so than Modifications to the intake side would (kinda like putting a higher flowing down pipe on a turbo car)
It is also a good Idea to use a fuel pressure safety switch that shuts the nitrous off is fuel pressure goes to low. This can help prevent lean conditions and possibly engine damaging detonation
Never assume that because you have good fuel pressure at idle that you have good pressure at WOT. There are variables such as acceleration G's, and fuel pressure regulators ect... always check WOT fuel Pressure
Never let nitrous contact your skin. It has a tempeture of -125 degrees F. severe frost bite can occur. Being that nitrous is so cold another one of its benefits is that it can increase the intake charge going into the cylinder
Never heat a nitrous bottle with an open flame. Use a bottle heater, like the saying goes use the proper tools for the job.
Above all safety first!!
That is all I can think of off of the top of my head. Hope this helps some one
