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I have a 99 Civic SI that I am trying to put back to stock condition. Im looking at some swaps and I can get a B16A, B16A1, B16A2 All these are complete swaps that come with everything. But my question is will all three completly work without any wiring issues. Because I did not know if OBD1 or OBD2 would matter or not. I would really like to just get the B16A2.....Any help would be great Thanks

 

Use the B16A2, as it was what came with the 99 civic Si

 

I have a oo si I would just throw the B16A2 in it thats what they come with so there shouldn't be any problem