A new mazda pcm flash would probably include changes to the engine controls. They all have so far.
Any changes to the pcm flash which affect engine control would most certainly require a like change to the CZ stage 1 program. They all have so far.
Check out this thread.
It's required reading for all CZ stage 1 users, me thinks. We all need to get into the program (programming?). I just wish I owned a laptop...
RX-8, MT, GT, Velocity Red, Red/Black 8-6-03