question about ecu problem
 

Ok so when i bought my car the bastard sold the ecu that came with the 1991 b16a and its obd1 (supposed to be obd0) so i bought a p30..the p30 drives the car around nice its just the idle is always screwing around and then engine light code is on...anyone know where i can get a ecu that wont give me these problems ? or simply get the p30 working properly, soon enough i will diagnose the CEL but i have no time for that right now...thanks