Do I need to get a new ECU

For my swap, b16a into a 1990 crx hf, am I going to need a new ecu or will the one that comes with the motor work with my car? If I do need a new ecu should I just go and buy a aftermarket one? If so what brand makes good power?

if the motor comes with an ecu, use it! b16a pr3 ecu, y1 or s1 tranny.