I´m doing a B16a1 swap and I really need a new header, what would you guy´s prefere? on the a1 motor there is 2 o2 sensors, so theres my problem really, because I really wanted the 4-1 JDM DC header, but my honda friends in denmarks says thats no good it only works on the B16a2 engine with 1 o2 sensor, so please help thx.

 

You can use the DC header you will just need to have a couple of O2 sensor bungs welded in. Or you could just spice the two O2 sensors together but I would not recommend that solution. Or I believe Hasport now makes a header for the B16a1 with 2 O2 senosor bungs already on it, down side to that is I think it goes for around 400 dollors.