Bypass rear o2 sensor?

[Slugger865]

I would like to remove my cat but when I looked under the car I noticed there is an o2 sensor behind the cat. I'm assuming if I remove it or not use it my check engine light will come on?!?! So my question is if there is a way to bypass it without having the cel come on? Also what is the bigger piece of pipe that is right behind the cat? Thanks

 

[Perkul8r]

Sadly cause you have a Non turbo car. Its gonna be a little harder. I am not sure what there is out there for tuning those dodge motors.

But other than retuning the ecu to not see the 2nd 02 sensor, there is no easy way to bypass the sensor itself without a CEL.

 

[Dsmkauai]

Why not weld a bung into your new pipe and keep it in place?

 

[Firsts tuner]

You could always just hollow out the cat and call it a day. If you do get a cel you can try the sparkplug no fouler trick on the o2sensor.

 

[Slugger865]

What's a bung?

 

[shakeandbake]

There's a gapper that stm sells for like 8 bucks. It just puts the o2 sensor farther away from the exhaust flow.

 

[my dreamt dsm]

I would like to remove my cat but when I looked under the car I noticed there is an o2 sensor behind the cat. I'm assuming if I remove it or not use it my check engine light will come on?!?! So my question is if there is a way to bypass it without having the cel come on? Also what is the bigger piece of pipe that is right behind the cat? Thanks

My cell dont turn on. I guess it's a hit or miss. That big thing your talking about is a resonator.

 

[Firsts tuner]

There's a gapper that stm sells for like 8 bucks. It just puts the o2 sensor farther away from the exhaust flow.

That's the same thing the spark plug no fouler does. 2.49 for a pack of 2. All you do is drill one out to fit around the o2 sensor and tighten it all down into the pipe. Oh and to answer one of the op's questions. That bigger pipe behind the cat is the resonator most likely.

 

[Dsm42oA]

I have a non turbo with out the cat and bypassed the o2 sensor, go pn ebay and search o2 sensor spacer