do i need this for my swap?

[mrnice1058]

http://www.psychorc.com/ht/tn_b18%20011.jpg

OK they told me that it is an injector resistor box but I have one but I got my engine from a 91 SiR with a b16a I converted everything to run for my obd2 car, and I have an obd1 ecu with a jumper harness, what does this injector resistor box do?

 

[xj0hnx]

If you have the motor converted already, you shouldn't need anything else.