I was on horsepowerfreaks looking at the hondatas and they have a p28 with s300 already programmed with a OBD2 connector. But it says OBD2a connector or OBD2b connector what is OBD2a and b connector. Witch one would I need if I was doing B18c5 into 1998 ek hatchback.

Thanks

 

You would need OBD2a for your car.