b16a o2 sensor question

[eth0r]

im about to drop b16a swap in my 90si hatch but i just relized the header on the motor has no o2 sensor on the pipes, but 1 on the down pipe.. can i wire the primary and secondary off the downpipe o2?

 

[Citizen_Insane]

so do you have an aftermarket header? Or do you just have a stock header with one of the o2 bungs not filled? Either way, you should run a second o2 if at all possible. Just go to the nearest junkyard and pick up a sensor, you'll thgank yoiurself.

 

[B16CRX]

It isnt good to run just one o2 or wire both into one. You have to have both wires separately for teh engine to run properly. You can either buy a real B16 header or add a bung to your existing one. On teh stock header the bungs are on teh collectors of 1-3 and 2-4.

 

[eth0r]

thanks for the info, i think the motor came with a 2nd gen manifold.. ill have to find a first gen one for now