K11 ecu

in our formula of micra stock cars we have been told that we have to run with an ECU which has a number 10 on it
Most of our cars are running with a ECU with a number 16/17 on them we are told that they are for a 1.3 or higher micra is this true
We only run 1.0
Does it make much difference which ECU you actually run
 
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