I have a CRX DX and I'm doing the B16A swap in it and I was looking at a comparison chart(http://b16a.honda-perf.org/wiringb16.htm) of the ECU plugs and what goes into each slot and I noticed that for B2 on the DX it's for the tandem valve but it serves no purpose on the SiR ECU. Since I would have a pin there could I remove that and use it for one of the pins I have to add(i.e. B10/B12/A8/C8)?

 

if its not needed....you can depin and cut and resolder for use somewhere else.

 

Here is a good link for wiring up your ECU....As you can see, their are a few pins that you dont need. http://www.hondata.com/techwiringpw0.html. After my swap i have about 4 wires that i dont need anymore

You need some ECU pins? I might be able to get some for ya
let me know for what connector if you need some