No you cann't as it's coded!
You buy the codes for the ECU to put it simply and the can then unlock it and Change what is need to be changed!
The two lads can fill you in on all methods of Mapping! I have only ever gotten 1 car Mapped and I used an after market ECU from Apexi which was grand but I lost all the safety of the original!
I'd go for ecutek but if your after an Ecu simtek would be the way to go I think! But as I said the two lads will point you in the right direction!
Don't hesitate to ask if I can answer anything else but I'm limited when it comes to this!
I'll pm them and tell them about this tread as you cann't yet as your not a full member! Best 50 you'll ever spend by the way!