Hi, I want to get a motor for my 93 DX hatch. What is wrong with running a B16a1 in a 5th gen Civic? Why does everyone say its so bad to do? What is the difference between that and the B16a2 besides 10HP and $1000? I just dont get why the Sir2 motors are so much more money for 10HP. I know its non-OBD but if you have a 4th gen civic running a B16a1 is fine, i dont get it. Please give me more info, thanks.