Re: nos and alky
When properly tuned, N2O should net a turbo'd engine faster spool, more power, and additional intercooling of the intake charge. In effect, you shouldn't need to spray alky/meth while spraying N2O as the N2O itself is an excellent cooling resource, and doing so could do a disservice in the sense that your allowing something (alky/meth) to occupy space in the combustion chamber that is not providing an efficient benefit to combustion.
Note that the operative part of all that is "when properly tuned"....which with anything other than direct port (or a plenum plate) is difficult (nearly impossible) to achieve with the SyTy manifold and a wet kit.