i have been wanting to take my cat off my truck but i really dont want a engine code what should i do

 

Search non fouler trick here on DF.

 

Okay so the code i get for the rear 02 sensor after i gutted my cat won't ruin my fuel economy? Also anyway to get rid of that smell??? lol

 

No the rear O2 has little if any effect on mpg. The smell will go away with time.

 

This thread made my head hurt

 

Ok. Here I am with a dumb question. Which pipe do you put the new o2 sensor on? does it matter? Im hopin puttin the new front o2 sensor on will help my mpg. I have been runnin no sensors for about 4 or 5 months now. no codes, so I guess my CEL dont work. Im not real worried bout that tho

 

It goes on the passenger side in front of the cat. and the other one goes after the cat.

 

It is normally on the passenger side.

 

Ok, no offense, but the reason i was askin, is cuz there is no cat. i cut that hunk of useless metal off, just to find out it was empty anyway... and i was only plannin on runnin the front o2 sensor that controls all the important stuff, not the supposedly useless rear one. And if any of this makes no sense, thats cuz i am far from an expert on anything lol. just a bit of forewarning

 

You wanna leave the rear O2 in there.... just do the non-fouler trick (DIY in FAQ Section) to prevent it from setting the CEL.