Nitrous control and ignition timing can be handled a number of different ways. The link above shows a progressive controller that ramps in the nitrous based on time. A “grid” is commonly an MSD ignition controller and data logger used to program the ignition system with a laptop. Neither of which are necessary at the basic level but are nice for tuning. What I was referring to is some kind of programmable ignition system that pulls timing when the nitrous is activated.
Go In-Depth Inside MSD's High-Tech Power Grid Ignition System
This is an MSD power grid.
