anyone can tell how to chane my engine from carbrator to injection ?

What car?

I would assume you'd at least need the engine harness, ecu, injector wiring, intake manifold, injectors, throttle cable, throttle body; just to name a few. Unfortunately (for you) most '92+ Hondas are fuel injected, so there probably won't be that much info on swapping things over. Highly doubt you'll find anything over here at AF, maybe try honda-tech.com (info will still be hard to come by).

the car is civic 1992 , and have a carperotor engine and have d15b engine

thank you alot civicspoon