I'm gonna build a b18a1 and put in my '91 HB. First off is it the P74 ECU? The motor is OBD1. Ok, here's the other question. Should I just get a regular stock ECU or should I go with something like Hondata or something like that. I'm not running any turbo or anything like that so I was thinking just a regular stock ECU. I've also seen ECU's like Jun Racing or Spoon Racing, are those worth getting?

 

obd1 pr4

 

or a obdo pr4