ecu 10 and 14?

[qzhonda450r]

my car will start but dies after 2-3 seconds. a mechanic said that it can be my ecu. the one in the car has a no.10 and i have an extra that is no.14. what do these numbers stand for. i tried searching but couldnt find anything.

[fran13]

what year is your car

[qzhonda450r]

its a 90 and its a kae.

[fran13]

ok so you should have no. 14

[qzhonda450r]

what does the 10 and the 14 stand for?