ECU swap question

Hi guys my micra is '97 1.0l and the ecu is Bosch 0 261 204 243 23710 1U101 XU (pic attached), but its kinda not working so i have to replace it. A friend of mine has an ecu from another 1.0l micra, but the number is 0 261 204 243 237 101U103 9X. And the shape looks the same. So can i fit it or the numbers have to be exactly the same? (Yes i know that i will need the nats box, keys and antenna too)
 

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frank

Club Member
there a 3 basic types of ecu, oblong prenats, square, and motronic
and various types of nats that complicates it all
 
OP
OP
T
there a 3 basic types of ecu, oblong prenats, square, and motronic
and various types of nats that complicates it all

Well both ecus are the same shape and engine and if i get whole nats stuff form the other car too(antenna immo box key etc) it should be fine right?
 

frank

Club Member
some of the square ones have a nats box behind the heater and a 4 wire antenna , and some have a 7 or 8 wire antenna
 
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