is any difference between the pm6 ecu's that come in a civic, civic wagon (including 4wd models) or a crx?

just as long as it's a pm6, it'll work right?

i have a 90 crx si and the ecu is shot. i bought the crx and the motor was blown so we swapped in the original engine (not the one that originally came in the car, but another d16) and an ecu that was pulled from another car and it doesn't work. we tried it on another crx si and it doesn't work, and we tried his ecu in my car and it worked. but i kinda need to know as soon as possible so i can buy a new one because i don't have a way to get to work anymore.

thank you in advance for any help guys!!!

 

so does ur buddy have a 90 CRX SI also? If so get one just like his and make sure it works when u get it. it just depends on what type of car it comes from.