what did you do with th o2 sensor?

 

I know of at least one guy here who just ziptied it to the frame or tranny and hasn't had a problem with it...

 

You can pick up weld on bungs at any auto parts store. A friend of mine that owns a shop had to do an "X" pipe, and mount the sensor there, in order to keep it from setting a code though.

The downstream sensor can be placed in a single tube, a foot or so away from the primary, or, you can get the little plug in feller (forgot the keyword/tricky phrase for it) that plugs into the harness, and spoofs the computer into thinking it is there.

I have not done this myself.... Yet.

 

yeah ive heard of the frame or the tranny but wont that still make it run lean or rich? i could just go with the x pipe though and not worry about it

 

02 sensor simulator. The Fastman sells them. I left it on my 1996 when I junked it. However they cna be dangerous if you get one and you are running CRAZY lean. They start fires. I had heard that they were illegal due to fires starting sometime in 2008. But the fastman stil sells them, I think.

YUP:
http://www.thefastman.com/02Simms.asp

 

^^ I spliced the wires into the connector from my old 02 sensor so I didn't need to cut the wiring harness.

 

What o2 sensor you talking about the Precat or Postcat o2, if your talking about the postcat o2 you can just ziptie it to the tranny, Im the idiot that did that a year ago and havent had a problem yet, If your talking about the precat o2 sensor thats a different story you need it in at least one pipe(the right way is to get an x-pipe and mount it in there) but you can just put it in one side.

The precat o2 sensor reads the gases from the motor and relays info to the computer, you will need it in a pipe or the motor will not run right.

 

i believe you need it in a crossover pipe, considering it originally takes oxygen readings from both pipes combined. a x-pipe or H-pipe should do you just fine.

 

cptafw163....so the fastman wont necessarily make your truck run correct it might make it run lean?

 

no, the fastman will not hurt your truck in any way, all it does is take care of the CEL because it is used for the REAR o2.....the front MUST be in at least 1 pipe or a crossover