[01SentraNYC]

I installed a 4-2-1 header and the check engine light stays on. How do I get it off. I heard there is a certain switch i could get that will shut it off. I have no idea. Help me out. Thanks PPL

 

[SportE-B15]

do you have an SE? If so you need to relocate the 2nd o2 sensor downstream past your catalitic converter. You will need to cut and splice the wires to make them longer, the a muffler shop will have to weld an o2 bung so you can install the sensor on the pipe.
that's what I did to mine, not sure how to handle the gxe as those had like 4 sensors.

 

[01SentraNYC]

Yes it is a SE. That sounds great. Are there any other solutions?

 

[01SentraNYC]

What kind of wiring did u use? It has to be heat resistant, right? Where can I find the wiring?

 

[i68k]

heat resistant wiring, i would look for automotive quality, im not sure what 'grade' that is. make sure it's the same guage as the old wires. also, be sure to use solder with flux, o2 sensors are voltage specific, any other methos other than soldering you may have voltage issues. and solder them correctly, or have some with experience soldering correctly help you.

edit: oops, you can buy automotive electrical wires from almost any parts store, just make sure you know what guage is correct.