Emissions experience w/ NickG software

[Budget M3]

After 2+ years with the standard DASC install (w/ AFPR and OEM s/w) I am looking into purchasing one of NickG's kits (stage 1, 2, or 3). Anyone have emissions testing experience with any of these upgrades? I just had my TI tested here in AZ, and all they did for a 1998 model was plug their computer into the OBD port with the car running. It passed with flying colors...I'm sure due to the original stock software. Before I invest in s/w upgrades, larger injectors and dump the AFPR, I want to make sure I don't have to swap everything back just to pass emissions testing.

I sent Nick an email at the address on his website yesterday, but since it's the weekend, don't expect to hear back until Monday at the earliest. Any insights would be greatly appreciated...