Can Mace supply me the same or similar computer program used by Mace for the SIDI engine's, so that I can tune mine as per my wish?

The tuning solution that we offer is closed source at the moment, however some calibration tables may be made available within the Power Pro Flash interface in future allowing for limited tunability. Otherwise if you're really keen on calibrating your car yourself, you could consider purchasing EFILive FlashScan V2. However this would mean that you would need to flash the car back to standard using our cable and start over again