FiTech EFI system

Nice feature, I have a 600 PA and as far as I know that 2 step feature isn't there. I am not using a supercharger this time around so I just removed the plug from the throttle body in preparation for my new NA 418 stroker. By the way did yours start right up? Did you get any "RPM Noise errors?
You may need the latest update for your particular model. I gather there isn't a universal firmware, but rather specific to your model.
RPM Noise- yes, I used to get it and then I insulated everything with that Velcro backed shielding/insulation wrap. No more RPM noise related fault codes.