that's not where it is suppose to go
thats more of a spot for like a wideband o2 sensor

the 2nd o2 sensor is suppose to go in the catalytic converter, like i've told you before. to not throw a CEL, you have to convert to EX exhaust which includes EX exhaust, header (which you have), and the cat.
is your catback aftermarket or just the muffler?

 

well ok it goes from the header to a straight pipe to the muffler. and the muffler is welded on the straight pipe

 

so you have no cat, that means your going to throw a cel, gotta get a cat if you want to fix that problem

 

what if i cut off my old cat from the old exaust and welded it on somewhere? or what about an o2 simulator

 

yea that works

you also need an o2 extension wire harness (not that expensive).
http://passwordjdm.com/PasswordJDM-O...P1767C320.aspx

 

cant i just make an extension with some wire?

 

Yea, just make sure the wires you extend are not the wires on the O2 sensor. Extend the wires that are on the engine harness.

 

i heard its also bad if you touch the tip of the o2 sensor. if so.. how much does one cost

 

i've never heard that before
i bought one for $50, but i'm sure since you're OBD2 it will be more expensive

 

The cost of the o2 sensor also depends on what trim 6th generation.