can you remove nats from an ECU

hi am doing a project in a mini i have a 1l ecu which i can get the 1.3 in my mini to run on but badly, i have bought a 1.3 ecu and it cam with a key and immobliser thing and it wont start the car the eccs relay doesnt even click is there a way i can bypass this immobliser or are there people i can take to.

i cant find where to by a 1.3 with out nats anybody have any idea or atleast if there is a code on the back i can use
 
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