Looks like you'll be ready to pwn fooz in no time! I'm getting my KAT tuned on friday!!!!!! WOOOOOOOOT
there is a website specifically for ka-t guys called www dot ka-t dot org and we all talk crazy talk about the wonders of ka-t! get on it!
Make sure you get the .63 AR turbo unless you want ungodly low spool like the .48... but i've read that quite a few with the .48 find it hard to cruise around without going into boost (on accident).
If you're looking for a solid EMS that doesn't cost a ton, check out CALUM. He does a realtime tunable setup for your stock ECU that is totally awesome. It is $350 (I paid $375 cuz he provided the ECU) and has a 6 foot usb cable. He provides the software necessary for tuning in real time while the car is running and the USB cable also creates a com port for you to use any of the major consult software!!! I bought Nissan Datascan for $30 and will be using it to log and tune in real time on friday!
Calum will also get you a .bin tune for your setup that will be somewhat in the ballpark so the tuners can get the car running, k values set, and go bananas much easier! Check into it! I know he does mostly SR20 ECU setups the same way. I'm sure you can find info about his work on these very forums!
Welcome to KAT. You won't regret it. And if you haven't seen what ka-t can do for you, right-click and save-as this link.
http://www.jrho.com/sm240/jrho-fast.wmv
this guy is running 18 psi, which equals 400whp or so on a built bottom end with low comp pistons! wooooooot.