Originally posted by Gdubdub ......What does everyone think?
It appears that Mazda wants to be absolutely sure that all RX-8s have the "M"-flash. When you and I first got "M"-flashed, the Mazda service computer system did not have a code for it, now it does.
Like you, I already had it, went in for the A/C amplifier upgrade, and saw MSP04 on the ticket.
I did not notice any "turbo" effects after the service as you have