The M112 NA and M112K engines use completely different ECU's, you can't just reflash your M112 unit (M112 NA uses ME28, M112K uses ME28.1). The M112 NA engine can be fitted with a supercharger off an M112K. The easiest/best way is to also use the M112K engine wiring harness (the M112 NA harness can be used but it requires modification), swap the fuel injectors over, and plug it all in to an M112K ECU. You'd just need to get the M112K ECU mated up to your existing SKREEM module and coded properly for your car. The increased compression of the NA engine will be fine as long as you stick with the stock pulleys and tune (don't go trying to increase boost too much). Since your in the US, Josh at the MSS should be able to make the ECU for you. The M112K ECUs are getting hard to find and are pretty expensive, but the ECU from an SRT6, SLK32 or C32 will all be suitable. If you want to improve things a bit further then I'd also change the tune in the transmission controller so it's set up properly for the increased torque.