somethings wrong with the fuel system!

[awd laser]

well i checked the CEL, and its giving me a constant code meaning theres somethin with the ECU. Do you guys think if I switched it with a eprom ecu that it would do something with the car? or will it run normally? Because my uncle has 2 eprom ecu's in his garage from his old GSX, so by switching it, would my car still be good? BTW im only 16 and im a noobie so sorry for all the Q's, jus trying to learn some stuff about these cars.