I have a 99 honda civic hatchback and iam trying to install a full catback exhaust on it but I have some qustions. The stock headers have two o2 sensors. And the headers iam trying to put on only has a spot for the first o2 sensor. I think the second one go's back on the catalyst converter but its not long enough to reach it. So how in the H*^^ do I do it. I had this catback exhaust for over a year now and I would love to get it on.

 

Get an O2 bung welded on after the new Cat. Converter and then buy an O2 extension harness to make the secondary O2 reach back to the new O2 bung.

 

where would I buy a O2 extension harness?

 

not hard to do yourself you just gotta lengthen four wires. and its HEADER. only one. no s.

 

http://www.casperselectronics.com/st...x=0&search.y=0

 

I dont know where to get wire that would be right for the O2 sensor and I think they are colour coded any way.

 

Thanks man Iam going to buy a O2 Extension right now.

 

When installing aftermarket headers and cat-back systems in your vehicle, the oxygen sensor is frequently relocated, usually far enough away from the original wiring location that the connector cant be re-installed. You cannot cut and splice oxygen sensor wiring since this can permanently damage the sensor and considerably reduce accuracy of the signal. These extensions are "Plug-And-Play" and utilize OEM connectors, terminals and seals with OEM wiring to maintain precisely accurate signals and safely extend the wiring connections. Note: Please check your connector shape and color to see if it matches your application.