I thought I would chime in with some updated info about k-pro. First things first, the two step rev limiter in k-pro supports fuel and ignition trimming -- ie you can dump extra fuel and retard ignition which gets you ANTI-LAG to spool your turbo at low speeds or stopped at the line. Second, the three nitrous control systems have secondary fuel and ignition tables to augment your main tables when active. K-pro also has onboard datalog storage so you can datalog without a computer attached -- newer units come with this feature stock. The nitrous control panels can be set to deactivate after a certain number of knocks have been detected as a safety feature.
Let me describe the setup I have and daily drive with. My rsx has a jackson racing supercharger kit running at 9 pounds on 91 octane pump gas. Since it could never reach full power from ignition tuning in the summer, I run water/methanol controlled by my nitrous panel in k-pro. Normally when I boost, without the water methanol, I setup my tables to be about -5 degrees ignition from what I knew was full power on good fuel and added lots of fuel in boost... probably running in the mid 10s a/f wise. When I reach 4500 rpm at 5+ psi, the methanol system activates via one of my ecu outputs depending on if another ecu input (my arm switch) is on. It then uses my nitrous #1 tables to add around 5 degrees ignition and remove fuel so I end up at around 12.2 a/f under boost with water/methanol and right under or at full power ignition timing (which is important to tune since you can over advance without detonation while on the water/meth). While in boost, if my a/f goes above 12.7 or so, it will cut the motor off. While methanol (nitrous #1) is active, if more than a preset number of knocks is observed (it doesn't knock at all under water/methanol, so the number is low!) it will cut off the water/meth and restore the previous ignition and fuel... which will be really rich and retarded. This keeps my motor in one piece if the methanol system fails and allows detonation to start or swings lean.
This is a real world setup driven every day to and from work. Boosted 25k miles on a stock motor.
I'm not trying to say you could or could not do what I've done with aem ems, but this is what I have done with MY k-pro, and I'm very pleased.