I have a b18a1 and im trying to convert to obd1, what all will i need?

Obd0-1 jumper
Obd1? ecu? (pr4)
obd1 dizzy?

Anything else?

 

dizzy u need TD23U or TD24U
a 4 wire o2 sensor
and a obd1 pr4 ecu
and obd1 injectors

 

you can still use your obd0 injectors if you prefer. they work just the same as obd1 injectors without the resistor box. you can use either the obd1 pr4 or an obd1 p75.

 

wrong dizzy number the TD-23/24 are for obd0 b18's 23-m/t and 24-a/t the correct dizzy number is a td55. but the other items are correct you will also need either an obdo-obd1 distributor jumper harness or re-pin either your engine harness or the new distributor for it to work properly.