i also have NO cat converter just have straight piping all the way back if the computer wasnt tuned for that could that make a differance? it was the same way on both my cars. no cat just piping

im running b16a2 injectors i think.

im runinng obd1 but the only o2 sensor i have is from a jdm b20 0bd2 can i wire that one to fit? i think its a 4 wire if i remember correct.