O2 Sensor Question

[blacknblue2002]

A long time ago I thought it would be a great idea just to solder an extra 5-6" of wire in line with my current O2 sensors....I did this instead of forking out money for extension harnesses when I bought an aftermarket midpipe

Since then I've seen quite a few posts where people 'Build their own' O2 sensor extensions, but I noticed that they generally put a resistor in line with one of the signals. I regretably never read any of those posts before doing mine, and now it has me wondering if my setup could be affecting my car's performance???

Being that I'm S/C'd, my air/fuel is pretty important to the tune. I've never thrown a code, but I'm worried either way...am I good, or should I do something?

 

[the98stang]

A long time ago I thought it would be a great idea just to solder an extra 5-6" of wire in line with my current O2 sensors....I did this instead of forking out money for extension harnesses when I bought an aftermarket midpipe

Since then I've seen quite a few posts where people 'Build their own' O2 sensor extensions, but I noticed that they generally put a resistor in line with one of the signals. I regretably never read any of those posts before doing mine, and now it has me wondering if my setup could be affecting my car's performance???

Being that I'm S/C'd, my air/fuel is pretty important to the tune. I've never thrown a code, but I'm worried either way...am I good, or should I do something?

I don't see how extending those wires could be a bad as long as the AFR is near perfect.

Then again, a resitor wouldn't hurt. And that would only take a few minutes to install at a cheap price. I would just put one in there.

 

[jstreet0204]

You don't need a resistor to extend the front o2's. The resistors are put in for the rear o2's to fake out the odbii cat test, which you don't need to do since you have an xcal and can just turn the test off. It has no effect on your a/f ratio.